I’ve gathered some of the sources where you can check best practices and style guides for different languages. Feel free to add more useful sources, articles or videos to this thread.
- [HTML] HTML best practices
- [HTML/CSS] Google HTML/CSS Style Guide
- [CSS/Sass] Airbnb CSS / Sass Styleguide
- [JavaScript] W3C JavaScript best practices
- [JavaScript] Google JavaScript Style Guide
- [JavaScript] Airbnb JavaScript Style Guide
- [JavaSCript] MDN JavaScript guidelines
- [Python] PEP 8 – Style Guide for Python Code
- [PHP] PHP The Right Way
- [Java] Google Java Style Guide
- [Java] Java Code Conventions - Oracle
- [C] cs50 Style Guide for C
- [C++] Google C++ Style Guide