Stuff to read

• The Git Community Book ( Available in French )
• Doctrine 2
• Symfony 2 documentation
• Dive into Python
• APC Documentation
• Django Book
• Django Documentation
• Dive into HTML5

wikipedia

• Lambda calculus
• Fold (higher-order function)
• Typed lambda calculus
• Higher-order function
• Anamorphism
• Catamorphism
• Map (higher-order function)