http://freemind.sourceforge.net/wiki....php/Main_Page
If you have the time to sit down and learn how to use this computer program, then you will learn your stuff cold.
Setting up a mind-map means you spend a period typing (memory exercise) then organizing (another memory exercise) and then formatting (so you soak in more while you make it pretty)...
...and then you have an organic body of knowledge in front of you distilled down to everything you are trying to learn and remember.
Hope this helps with the test.