Basic Stability Theory and Terminology
This is an overview of stability theory - you won't be asked specific math questions in these videos but they are helpful to get an understanding of the basics of stability of inclined vessels. You will probably see some multiple choice questions in Deck Safety about these concepts.
The following chapters scanned from Ladage, Stability and Trim for the Ships Officer, 3rd edition. This is an official USCG library reference, and has lots of great introductory material for stability problems.