##General Programming You should be familiar with:
- Variables
- Control flow (for, if, while statements)
- Functions
This is all covered in the Codecademy JavaScript tutorial.
##Object Oriented Programming You should be familiar with concepts like:
- Classes
- Objects as data structures
- Class instances
- Methods
- Anything beyond this (inheritance, abstraction) will be explained at length in class
These concepts are best summarized in the Codecademy JavaScript tutorial, units 7 and 8.
For additional reading, see