If it helps, this is what I do:
Step 1: Solve 40 Bio Destroyer Problems, marking my answers on an Excel spreadsheet. If I arrived at the answer by elimination/ am not sure/ would like to look at the question later, I leave a "-" in the cell immediately to the right of the answer.
Step 2: Go to the solutions and find out which ones I got right/wrong. I then mark answers I got right with a green fill, answers I got wrong with a red fill.
Step 3: Do what SmileDesignersDDS said and mark the Solutions page. Go through each question again, reading the solution for EACH ONE (regardless if you got it right or wrong!). I often try to solve the question a second time at this point. If I got it wrong the first time, I know that answer is eliminated and take another guess.
Step 4: Keep a white board with you and mark down any problems that you got right, but that you'd like to look at again. Often times, the Destroyer solutions diverge from the topic and so I like to mark those down so that I can reread the new information.
Step 5: Open up a Word document, and then go over the questions you missed plus the questions you selected. Type up anything you think you might need to know in the Word document, but make sure you do it in your own words. You probably won't look at these again (unless you are trying to solve another problem that's similar), so it's important that you write it in your own words so you can remember it.
I'm averaging a 70.5% my first run through, but I still mark down 20-23/40 of the problems that I go through for a "third review." I honestly think that is the best way to learn the Bio, followed by some note cards for things like hormones, digestive tract enzymes, etc.