* fix: Remove broken link for The Python Game Book
Removed the entry for 'The Python Game Book' by Horst Jens as the archived link returns 404 errors and the original site is no longer accessible (403 forbidden).
Fixes#12663
* fix: Remove SoloLearn course links due to access restrictions
Removed all SoloLearn course links as the platform now requires completing previous exercises before accessing new content, which violates the principle of free and open access to educational resources.
This affects the following sections:
- C# (Learn C#)
- C++ (Sololearn C++)
- Data Science (Learn Data Science)
- Database (SQL) (Learn SQL)
- Java (Learn Java)
- JavaScript / React (Learn React + Redux)
- Machine Learning (Machine Learning)
- PHP (Learn PHP)
- Python (Python Tutorials)
- Swift (Learn Swift 4)
Fixes#12660
* add cheatsheet for blockchain
add cheatsheet for blockchain
* Remove duplicate entry in Blockchain section
Removed duplicate Blockchain Cheat Sheet entry.
* Fix spelling and format in cheatsheets
Corrected spelling of 'BlockChain' to 'Blockchain' and added hyphens before names in the Blockchain section.
* Remove duplicate Blockchain For Beginners link
Removed duplicate link for 'Blockchain For Beginners'.
* Update author names in blockchain cheat sheets
* Added Business analytics with python cheat sheet from ZTM
* Added acidentally deleted line of 449
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Co-authored-by: enguy-hub <enguy-hub@github.com>
* Add CS50's Introduction to Cybersecurity course by David J. Malan
* Fix spacing issue after link in CS50 Cybersecurity course entry
* Update courses/free-courses-en.md
Co-authored-by: Eric Hellman <eric@hellman.net>
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Co-authored-by: Diya Joshy <diyajoshy8ackmnss@gmail.com>
Co-authored-by: Eric Hellman <eric@hellman.net>
* Add Foundational C# with Microsoft Certification
Add "C# with Microsoft Certification" A Free Collection of Resources To Learn C# with Microsoft and Free Code Camp.
Added under CSharp Section In free-courses-en.md.
* Update free-courses-en.md
Removed outdated SoloLearn Python course link and replaced another SoloLearn entry with the updated Python Developer Course link, noting registration is required. Changes Made in "Python" Section in free-courses-en.md.
- Add Rust Programming Tutorial by Trevor Sullivan
- Add Learn Rust by Smart Contract Programmer
- Add Rust Crash Course Tutorial for Beginners by Francesco Ciulla
All entries properly formatted and placed in alphabetical order within the Rust section.
* Add React cheatsheet from ZTM
* Move to line 335
* Moved to line 334
* Moved to line 333 as suggested
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Co-authored-by: enguy-hub <enguy-hub@github.com>
* feat(pt_BR): Add cursos de Delphi, Elixir, Sass and Swift
* fix(pt_BR): add course Lua
* feat(pt_BR): Add cursos de Delphi, Elixir, Sass, Lua and Linux
* feat(pt_BR) add Linux
* (pt_BR) add Linux
* (pt_BR) add Sass, Rust and React Native
* (pt_BR) add segurança da informação
* feat/(pt_BR) add Angular,TypeScript and WordPress
* feat/ add Markdown,Programação,Django,Flask
* feat/add raspberry Pi,Sass,Swift and SEO
* ADD: All resources to become Ai engineer, with free courses and yt videos #12396
* Update free-programming-books-subjects.md
* Update links and formatting in subjects list
* Remove duplicate book entries in subjects list
Removed duplicate entries for 'Introduction to Machine Learning Systems' and 'Learn Tensorflow'.
* Fix formatting for text mining and ML resources
* Update books/free-programming-books-subjects.md
Co-authored-by: Eric Hellman <eric@hellman.net>
* Update books/free-programming-books-subjects.md
Co-authored-by: Eric Hellman <eric@hellman.net>
* Update books/free-programming-books-subjects.md
Co-authored-by: Eric Hellman <eric@hellman.net>
* Remove LLM Transformer Model link from subjects
Removed a link to 'LLM Transformer Model Visually Explained'.
* Add LLM Transformer Model tutorial link
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Co-authored-by: Eric Hellman <eric@hellman.net>
* Add cheat sheets for Chef, Jenkins, and Puppet
Add Cheat Sheets for Chef, Jenkins, and Puppet
This pull request adds comprehensive cheat sheets for three key DevOps configuration management tools: Chef, Jenkins, and Puppet. These tools are widely used in automation, infrastructure management, and continuous integration/continuous deployment (CI/CD) pipelines.
Why this is valuable:
Chef, Puppet, and Jenkins are cornerstones of modern DevOps workflows, enabling efficient and reliable management of infrastructure and software delivery.
The cheat sheets provide quick yet detailed references for commands, architecture, common use cases, and best practices, helping practitioners accelerate learning and day-to-day work.
Including these cheat sheets enriches the repository’s DevOps section, making it a more complete and practical resource for developers, sysadmins, and engineers.
Sources and Quality:
All added cheat sheets come from reputable providers such as Intellipaat, which offer free, up-to-date, and well-structured content accessible without paywalls.
Highlights from the added cheat sheets:
Chef: Covers configuration management concepts, cookbook recipes, and client-server architecture details.
Puppet: Explains manifests, modules, agent-server communication, and compliance reporting capabilities.
Jenkins: Includes pipeline creation, job configuration, plugin management, and CI/CD best practices.
This update is aligned with current DevOps trends and the increasing demand for reliable infrastructure automation and deployment tools.
Date: Thursday, October 16, 2025, 6 PM IST
* Fix formatting in free-programming-cheatsheets.md
Fix formatting in free-programming-cheatsheets.md
* Refactor cheat sheet index for DevOps topics
Reorganized cheat sheet index to group DevOps-related topics and added Ansible and Chef cheat sheets under DevOps.
* Add Quantitative Analysis section with three free book resources
- Added OpenIntro Statistics with CC BY license
- Added Fundamentals of Quantitative Analysis (CC BY-SA) source repo
- Added Applied Quantitative Finance draft (license unspecified; free for educational use)
- Included notes about licensing and usage for clarity
This adds a focused new section in free programming books for quantitative analysis/finance learners.
* Fix linter errors: list marker and spacing
* Fix linter errors: list marker and spacing #2
* Fix linter errors: list marker and spacing #3
* Refactor: Consolidate Quantitative resources into Statistics & apply all review feedback (Resolves#12565)
* **Relocation & Cleanup:** Moves all Quantitative Analysis entries to the 'Statistics' section under the 'Mathematics' heading, and deletes the obsolete 'Quantitative Analysis' section heading.
* **Content Cleanup:** Removes a duplicate entry for the 'OpenIntro Statistics' book.
* **Link Fixes:**
* Updates the link for 'Applied Quantitative Finance' to the stable, free Springer PDF source, as requested.
* Updates the link for 'Fundamentals of Quantitative Analysis' to the official `github.io` page.
* **Style Fix:** Removes the 'Dr.' honorific from the author name for 'Fundamentals of Quantitative Analysis'.
* feat(casts): agregar podcast 'Programador X' de Xavier Reyes Ochoa
* fix(casts): correct list markers and alphabetical order in podcasts
* feat(podcast): add 'Programador X' - Xavier Reyes Ochoa
Add the podcast 'Programador X' by Xavier Reyes Ochoa to the Spanish free programming podcasts list.
- Alphabetized under Programming section
- Marked as podcast
- Verified link on Spotify
* Fix: Update AI section in free-courses-ta.md with new resources
* Fix: Add a line break for better readability in the AI section of free-courses-ta.md
* Fix: Add line breaks for improved readability in the Index and AI sections of free-courses-ta.md
* Fix: Add line breaks for improved readability in the AI and Android sections of free-courses-ta.md
