I would recc reading "Current medical diagnosis and treatment" to w/u any patients you are assigned. Don't just copy the intern's assessment and plan, you should be trying to make your own and then comparing what you wrote to what he/she put. In your spare time, I'd read "blueprints" cover to cover, then do the questions at the end. After you finish doing that, I'd recc doing all of the questions in "Pretest". I wrote a little about this in my "Internal medicine FAQ", you can find it in the internal medicine forum.