* Added Statistics and Machine learning course by StatQuest
* Edited alphabetical order of previous commit
* Added Network Security Book by OpenLearn
* Revert "Added Network Security Book by OpenLearn"
This reverts commit bd4757b71a.
* Update courses/free-courses-en.md
Co-authored-by: Eric Hellman <eric@hellman.net>
---------
Co-authored-by: Eric Hellman <eric@hellman.net>
* update to evolunoob for 'Algorithmes'
* update to evolunoob for 'C'
* update to evolunoob for 'C-sharp'
* update to evolunoob for 'HTML/CSS'
* update to evolunoob for 'Java'
* update to evolunoob for 'JavaScript'
* update to evolunoob for 'Python'
* update to evolunoob for 'PHP'
* update to evolunoob for 'SQL'
* removing mention of Formation Video
---------
Co-authored-by: Mamadou <72272993+Spokaren@users.noreply.github.com>
This PR adds a new free DevOps course in Hindi to the free-courses-hi.md file under the DevOps section. The course is titled Free Terraform Course by TrainWithShubham and is available as a YouTube playlist.
The course provides a comprehensive introduction to Terraform, covering infrastructure as code concepts in Hindi, which will greatly benefit Hindi-speaking learners interested in DevOps and cloud infrastructure automation.
The new entry has been inserted in alphabetical order among the existing DevOps courses as per the repository's contributing guidelines.
Course link:
https://www.youtube.com/playlist?list=PLlfy9GnSVerQzwhT644uP14iqZa0ZC4pn
This is a free and publicly accessible course.
* introduce the generative ai courses under AI section
* arrange the 'theory' section alphabetically
* Add 'Generative AI' subsection under Artificial Intelligence (courses)
* Update courses/free-courses-en.md
Co-authored-by: Eric Hellman <eric@hellman.net>
* Fix the title as per suggestions
Co-authored-by: Eric Hellman <eric@hellman.net>
* update youtube channel name
Co-authored-by: Eric Hellman <eric@hellman.net>
* correct the GenAI course list
* remove the affiliation
Co-authored-by: Eric Hellman <eric@hellman.net>
---------
Co-authored-by: Eric Hellman <eric@hellman.net>
* feat: add new bash course amd remove notfound books
* fix: course position
* fix: course position
* fix: add line to course
* fix: name on courses/free-courses-pt_BR.md
Co-authored-by: Eric Hellman <eric@hellman.net>
---------
Co-authored-by: Eric Hellman <eric@hellman.net>
* Add Complete Java Programming Course 2025 by Engineering Digest to Hindi Java courses
This pull request adds a free Hindi Java programming course titled Complete Java Programming Course 2025 by Engineering Digest to the Java section of the free-courses-hi.md file. The course is available as a YouTube playlist and covers modern Java programming concepts relevant for learners in 2025.
Why is this valuable?
The course offers a comprehensive, up-to-date learning path for Hindi-speaking students interested in Java programming, improving accessibility to quality programming education in their native language.
How do we know it's really free?
This playlist is publicly available on YouTube with no enrollment restrictions or fees.
Course link:
https://www.youtube.com/playlist?list=PLA3GkZPtsafY62QhQ030p85HAer0pFDdr
* Fix formatting in Java courses list
This pull request adds a new free Data Structures course in Hindi to the free-courses-hi.md file under the Data Structures section. The course is titled Data Structures by Nargish Gupta and is available as a YouTube playlist by NG Tutorials.
This course provides in-depth coverage of data structures concepts in Hindi, making it an excellent resource for Hindi-speaking learners seeking to build strong fundamentals in data structures and algorithms.
The new entry is added in alphabetical order according to the repository guidelines.
Course link:
https://www.youtube.com/playlist?list=PLPzfPcir5uPQ6LrB421cvMvcF3EcsGrr5
* Add screencast resource for "The Rust Lang Book" by lets get rusty for the rust language
* fix the error : "free-programming-books/casts/free-podcasts-screencasts-en.md
427:1-430:128 warning Alphabetical ordering: swap l.430 and l.429 alphabetize-lists remark-lint
427:1-430:128 warning Incorrect number of blank lines between last section and next heading blank-lines-1-0-2 remark-lint"
* Add screencast resource for "Memory Management" by Let's Get Rusty
Remove duplicate entry for "The Rust Lang Book" in podcasts
* Remove unnecessary blank line before "Spark" section in free-courses-en.md
* Reorganize Algorithms and Data Structures sections in free-courses-hi.md
- Merged separate Algorithms and Data Structures sections into a combined 'Algorithms and Data Structures' section
- Added subheadings for 'Algorithms' and 'Data Structures' within the combined section
- Moved common DSA courses to the main combined section
- Organized exclusive algorithm courses under 'Algorithms' subheading
- Organized exclusive data structure courses under 'Data Structures' subheading
- Updated index to reflect the new structure
- Maintained Soft Computing as a subheading under the combined section
This reorganization improves the structure and makes it easier to find relevant courses while maintaining logical grouping of related content.
* Fix linting error: correct blank lines between sections
- Fixed incorrect number of blank lines between Data Science and Databases sections
- Changed from 3 blank lines to 1 blank line as required by remark-lint
- Resolves blank-lines-1-0-2 linting rule violation
* add See [Algorithms] and [Data Structures] pointer under combined DSA section (per PR review)
* place explicit See links at old Algorithms/Data Structures positions; remove generic note
* fix blank-line spacing around new See lines to satisfy remark-lint
* move 'See Data Structures' and 'See Algorithms' directly under combined heading; remove duplicates; fix blank lines
* See pointers as separate bullet items under combined heading; also fix lint
* Fix lint #3
* ensure single blank line after See pointers before resource list
* convert See pointers to plain lines (not list items) and fix spacing
* reduce blank lines before '#### Algorithms' to exactly one
* eparate 'See' lines with a blank line; keep linter spacing
* Update courses/free-courses-hi.md
---------
Co-authored-by: Eric Hellman <eric@hellman.net>
* Added oops in C++ and Java and Binary search courses
* Ensured Alphabetical Order and removed duplicate
* lint fixed
* Update courses/free-courses-hi.md
Co-authored-by: Eric Hellman <eric@hellman.net>
---------
Co-authored-by: Eric Hellman <eric@hellman.net>
* Add RTL/LTR Markdown linter for mixed-direction text consistency and PR annotation
Introduce a Python-based linter (scripts/rtl_ltr_linter.py) to automatically detect and annotate issues related to mixed Right-To-Left (RTL) and Left-To-Right (LTR) text in Markdown files. The linter analyzes list items, book entries, and metadata for potential bidirectional text rendering problems, such as missing Unicode directionality markers (RLM/LRM) and improper handling of LTR keywords or symbols in RTL contexts.
Key features:
- Scans all Markdown files in the repository, with full logs saved as workflow artifacts.
- Annotates only changed or added lines in pull requests, providing targeted feedback in the GitHub Actions Job Summary.
- Detects common RTL/LTR issues, including:
- Missing directionality markers after LTR keywords (e.g., "HTML") or symbols (e.g., "C#") in RTL text.
- BIDI (bidirectional) mismatches that may affect text display.
- Incorrect ordering of author names and metadata in RTL contexts.
- Configurable via rtl_linter_config.yml for keywords, symbols, and severity levels.
- Includes a GitHub Actions workflow (rtl-ltr-linter.yml) for automated checks on PRs.
* Add test cases for RTL/LTR linter in English and Arabic book lists
Add sample entries to free-programming-books-en.md and free-programming-books-ar.md to test the RTL/LTR Markdown linter.
These test cases include various combinations of RTL and LTR text, keywords, symbols, and metadata to verify that the linter correctly detects directionality issues and outputs the expected logs and annotations.
* Restore original book lists after RTL/LTR linter test cases
Revert test entries in free-programming-books-en.md and free-programming-books-ar.md, restoring the original book lists. This commit removes temporary test data used for validating the RTL/LTR Markdown linter, preparing the repository for merging the PR with a clean state.
No functional changes to the linter or configuration files; only test content has been removed.
* Update RTL/LTR linter workflow and script: run only on RTL file changes or "RTL" label, fail only on errors
The GitHub Actions workflow for the RTL/LTR Markdown linter now runs only if:
- The PR modifies .md files related to RTL languages (ar, he, fa, ur), or
- The PR has the "RTL" label.
The linter script has been updated to fail the check only if errors are found on changed lines, not for warnings.
* Only upload linter artifact if linter step runs
Prevent warning about missing artifact by uploading the linter output log only if the linter step was executed (success or failure). This avoids unnecessary warnings when the linter is skipped because no RTL files were changed and no RTL label is present.
* Test workflow: modify non-RTL markdown file
Modified free-programming-books-en.md to verify that the RTL/LTR linter workflow does not run when only non-RTL markdown files are changed and the "RTL" label is not present.
* Test workflow: modify RTL markdown file to trigger linter
Modified free-programming-books-ar.md to verify that the RTL/LTR linter workflow runs as expected when an RTL markdown file is changed.
* Fix RTL/LTR BIDI issues in some markdown files
Applied directional markers (‎, ‏) and other formatting fixes to resolve BIDI (bidirectional text) errors and warnings reported by the linter in several .md files.
* Fix workflow: upload linter log only if linter step has not been skipped
Updated the workflow to upload the linter output artifact only when the linter step was actually executed (not skipped)
* Add debug step to check linter outcome in workflow
Added a debug step after the linter execution in the workflow to print the outcome and conclusion of the run_linter step.
* Set continue-on-error for linter step to allow artifact upload and debug
* Remove workflow debug step and update markdown file
Removed the debug step from the RTL/LTR linter workflow and applied further changes to a markdown file.
* Fix RTL/LTR BIDI issues in some markdown files
Applied directional markers (‎, ‏) and other formatting fixes to resolve BIDI (bidirectional text) errors and warnings reported by the linter in several .md files. This commit is a second batch of corrections to improve RTL/LTR rendering and pass the linter checks.
* Fix RTL/LTR BIDI issues in some markdown files
Applied directional markers (‎, ‏) and other formatting fixes to resolve BIDI (bidirectional text) errors and warnings reported by the linter in several .md files. This commit is a third batch of corrections to improve RTL/LTR rendering and pass the linter checks.
* Do not produce log file if no issues found
Updated the linter script to avoid creating the log file when no issues, warnings, or notices are found. If no issues are detected, the script now prints a "::notice ::No issues found"
* Always print annotation with number of errors and warnings found
Updated the linter script to always print an annotation indicating how many errors and warnings were found, even if there are none.
* Fix: always print summary annotation with number of issues found
* Add a missing newline character at end of file free-courses-he.md
* Update linter configuration and revert markdown files to pre-fix state
Updated the organization of keywords and symbols in the linter configuration file. Reverted all markdown files to their original state prior to the fixes.
* Update free-programming-books-he.md with fixes
* Update free-programming-books-he.md with further fixes
* Update free-programming-books-he.md with fixes
* Update free-programming-books-fa_IR.md with fixes
* Update free-programming-books-he.md with further fixes
* Update free-programming-books-ar.md with fixes
* Update free-programming-books-ar.md with further fixes
* Update free-podcasts-screencasts-ar.md with fixes
* Update free-podcasts-screencasts-fa_IR.md with fixes
* Update free-courses-he.md with fixes
* Update free-courses-he.md with further fixes
* Update free-courses-fa_IR.md with fixes
* Update free-courses-fa_IR.md with further fixes
* Update free-courses-ar.md with fixes
* Update free-courses-ar.md with further fixes
* Update free-courses-ar.md with further fixes
* Update free-courses-ur.md with fixes
* Update some markdown files with further improvements
* Fix alignment of nested lists in free-programming-books-fa_IR.md
* Update CONTRIBUTING.md and CONTRIBUTING-it.md with RTL/LTR linter error fixing guidelines
Added a section to CONTRIBUTING.md and CONTRIBUTING-it.md explaining how to fix RTL/LTR Markdown linter errors, including when to use ‏ and ‎ with practical examples for contributors working on files with mixed RTL and LTR text
* Add 2 Vietnamese courses by Nam .NET
* Fix alphabetical order
* Fix alphabetical order
* Fix alphabetical order
* Fix alphabetical order
* Fix alphabetical order
* Fix alphabetical order
* Update courses/free-courses-vi.md
Co-authored-by: Eric Hellman <eric@hellman.net>
* Update courses/free-courses-vi.md
Co-authored-by: Eric Hellman <eric@hellman.net>
* Fix alphabetical order
---------
Co-authored-by: Eric Hellman <eric@hellman.net>
* Add Android courses to the list of free courses in Vietnamese
* Add ASP courses to the list of free courses in Vietnamese
* Add Assembly courses to the list of free courses in Vietnamese
* Add AutoIt courses to the list of free courses in Vietnamese
* Add Bash courses to the list of free courses in Vietnamese
* Add C courses to the list of free courses in Vietnamese
* Add C++ courses to the list of free courses in Vietnamese
* Add C++ index to the list of free courses in Vietnamese
* Add C# courses to the list of free courses in Vietnamese
* Add Cấu trúc dữ liệu và Giải thuật courses to the list of free courses in Vietnamese
* Add Dart courses to the list of free courses in Vietnamese
* Add ExpressJS courses to the list of free courses in Vietnamese
* Add Flutter courses to the list of free courses in Vietnamese
* Add Git courses to the list of free courses in Vietnamese
* Add Go courses to the list of free courses in Vietnamese
* Add HTML and CSS courses to the list of free courses in Vietnamese
* Add Java courses to the list of free courses in Vietnamese
* Add JavaScript courses to the list of free courses in Vietnamese
* Add jQuery courses to the list of free courses in Vietnamese
* Add Vue.js courses to the list of free courses in Vietnamese
* Add Kotlin courses to the list of free courses in Vietnamese
* Add Machine-Learning courses to the list of free courses in Vietnamese
* Add MongoDB courses to the list of free courses in Vietnamese
* Add MySQL courses to the list of free courses in Vietnamese
* Add Next.js courses to the list of free courses in Vietnamese
* Add NodeJS courses to the list of free courses in Vietnamese
* Add PHP courses to the list of free courses in Vietnamese
* Add PostgreSQL courses to the list of free courses in Vietnamese
* Add Python courses to the list of free courses in Vietnamese
* Add R courses to the list of free courses in Vietnamese
* Add React courses to the list of free courses in Vietnamese
* Add Ruby courses to the list of free courses in Vietnamese
* Add Rust courses to the list of free courses in Vietnamese
* Add Sass courses to the list of free courses in Vietnamese
* Add Security courses to the list of free courses in Vietnamese
* Add SQL courses to the list of free courses in Vietnamese
* Add SQL Server courses to the list of free courses in Vietnamese
* Add Swift courses to the list of free courses in Vietnamese
* Add TypeScript courses to the list of free courses in Vietnamese
* Add Angular courses to the list of free courses in Vietnamese
* Add Unity courses to the list of free courses in Vietnamese
* Add Wordpress courses to the list of free courses in Vietnamese
* fix: Put lists in alphabetical order
* Remove single videos shorter than 1 hour from the list of free courses in Vietnamese
* Add Android courses to the list of free courses in Vietnamese
* Add ASP courses to the list of free courses in Vietnamese
* Add Assembly courses to the list of free courses in Vietnamese
* Add AutoIt courses to the list of free courses in Vietnamese
* Add Bash courses to the list of free courses in Vietnamese
* Add C courses to the list of free courses in Vietnamese
* Add C++ courses to the list of free courses in Vietnamese
* Add C++ index to the list of free courses in Vietnamese
* Add C# courses to the list of free courses in Vietnamese
* Add Cấu trúc dữ liệu và Giải thuật courses to the list of free courses in Vietnamese
* Add Dart courses to the list of free courses in Vietnamese
* Add ExpressJS courses to the list of free courses in Vietnamese
* Add Flutter courses to the list of free courses in Vietnamese
* Add Git courses to the list of free courses in Vietnamese
* Add Go courses to the list of free courses in Vietnamese
* Add HTML and CSS courses to the list of free courses in Vietnamese
* Add Java courses to the list of free courses in Vietnamese
* Add JavaScript courses to the list of free courses in Vietnamese
* Add jQuery courses to the list of free courses in Vietnamese
* Add Vue.js courses to the list of free courses in Vietnamese
* Add Kotlin courses to the list of free courses in Vietnamese
* Add Machine-Learning courses to the list of free courses in Vietnamese
* Add MongoDB courses to the list of free courses in Vietnamese
* Add MySQL courses to the list of free courses in Vietnamese
* Add Next.js courses to the list of free courses in Vietnamese
* Add NodeJS courses to the list of free courses in Vietnamese
* Add PHP courses to the list of free courses in Vietnamese
* Add PostgreSQL courses to the list of free courses in Vietnamese
* Add Python courses to the list of free courses in Vietnamese
* Add R courses to the list of free courses in Vietnamese
* Add React courses to the list of free courses in Vietnamese
* Add Ruby courses to the list of free courses in Vietnamese
* Add Rust courses to the list of free courses in Vietnamese
* Add Sass courses to the list of free courses in Vietnamese
* Add Security courses to the list of free courses in Vietnamese
* Add SQL courses to the list of free courses in Vietnamese
* Add SQL Server courses to the list of free courses in Vietnamese
* Add Swift courses to the list of free courses in Vietnamese
* Add TypeScript courses to the list of free courses in Vietnamese
* Add Angular courses to the list of free courses in Vietnamese
* Add Unity courses to the list of free courses in Vietnamese
* Add Wordpress courses to the list of free courses in Vietnamese
* fix: Put lists in alphabetical order
