Putting a time constraint of two days on yourself is not the best idea, especially since it ends in a test.
I would recommend studying your chapter the way you normally would, then experimenting with PRing after you finish. This way, you can still try out PRing on the type of material you use, but you won't have problems not getting it right and risking a poor grade.
PRing has to be approached in a relaxed, open-minded manner. An impeding test may make you anxious, and if you don't do well on it you'll develop reservations on the system.
Hope this helps. Hope you get your system soon!
-Ramon http://razor.ramon.com