A few friends and I are doing a self-study on Computer Science/Programming and taking the Computer Science AP A exam. Although I have experience in programming in a few languages, it's still difficult for me to explain some concepts such as OOP and memory management.
Are there are interesting diagrams or infographics that could explain these things?
I like the course material that MIT puts online for free, the video lectures in the intro-cs class should be useful.
http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/