Finding explanations about the various aspects of WPA2 suffers from inconsistent terminology and a general lack of clarity on what purpose some protocol/standard serves and how it relates to others.
I'm not looking for a total breakdown of every single part of WPA2, but I do have a few unanswered questions about it:
What is the difference between "WPA2-Personal" and "WPA2-Enterprise"? Is "WPA2-PSK" synonymous with either one of these, is it an alternative to them, or is part of a different category?
How are session keys established or "rotated"? How are they derived?
How is the initiation of a WPA2 connection authenticated? Is a challenge-response scheme used?
What cipher is used, what is the key size used for it, and what mode is it run in?