I bought the revision guide Biology for the IB Diploma and my plan is to finish re-reading and taking notes on every topic because to do well I need to refresh my memory on everything we learned. This organized and concise book sums up everything, using diagrams and tables, in under 200 pages. It just seems so much better than trying to go through and understand all of the assessment statements I've written.
Other than that, I'm going to keep doing practice exams, study the mark-schemes, and make hundreds of notecards.
Bio is going to be intense. Good luck everyone!