General Best Practices
Any Language
- Top Ten Programming Books
- DRY principle : Don't Repeat Yourself
- Joomla guide
- OOP and starting point for PHP and Javascript specific OOP
- http://www.artima.com/weblogs/viewpost.jsp?thread=331531
- Write Your API First
- Tools for testing and code review
Web performance best practices
Database
- http://codebalance.blogspot.com/2011/07/20-database-design-best-practices.html