For biochem, I only needed the decks and old exams. I felt the old exams helped more than anything else-- There were a lot of repeat questions for Biochem when I took the Part I two summers ago.
Thanks to the OP for asking the question, and thanks to Tom for his reply.
I'm beginning my NBDE I studies tomorrow, so I'm grateful for those who have shed some insight on valuable study methods (including Yah-E and those who posted on his thread).
I mainly studied my old class notes just as if I were going to take a Biochem final...then I studied the old tests...went through the decks on the subj. and pulled the cards I felt my biochem class didn't cover and went over those a couple of times...that all worked pretty well for me.