Data based on 3 reviews.
Study every day, make sure you are competent in algebra. You will probably end up with a B - low A so do not be too discouraged with your grade (HPC). Not a bad teacher, just very tough course compared to the others. If you do not do well on the App B you are able to drop early and take the course elsewhere without affecting your transcript.
For calc BC, study old AP Calc FRQs.