acronyms
Acronyms worked for most of us on my course. Some guys even had acronyms for their acronyms!
Agree with the other post about writing lists over and over. Most ATCs tend to be visual learners (as opposed to auditory or kinesthetic) so seeing it in black and white should help.
Also we used to use palm cards with a question written on one side and the answer written on the other side (sometimes the answer took two cards!) That way you can quiz yourself without accidentally cheating, plus helps with the repetition factor mentioned above. Also get together with some of the other students and quiz each other.
A friend of mine made tapes of questions (followed by a long pause and then the answer) and played them in the car so she could study while driving.
It seems like there's a lot to learn, I know. But don't worry, by the time you graduate, they will have rewritten, changed or deleted most of the procedures so you can learn them all over again! (Not cynical at all!) Good luck with your exams.