I use the basic R-R-R-R formula:
Repitition-Reinforces-Recognition-Retention
I think that speaks plainly enough, but the key to most exam success is the ability to recognize keys words and phrases and form a coherent link between them.
All of the methods listed - if they lead to success, are just as valid as any other, but I also rely heavilly on the use of practice exams that give me a better indication as to how the RRRR system is working.