For Microbiology: What helped me a lot was do go over all her slides. Know it inside and out. And also learn to apply what you learn. Do all the Mastering micro questions and do all the questions she hands out. Go over the study guides. You don't need to read the textbook. It is only for clarification or something you don't understand. Stick to the powerpoint slides and do all the review questions she gives. You'll end up with a very good grade.
Hesi: For A&P- use the HESI book and also the pocketprep app that everyone is talking about. Make sure you understand the rationale behind each question when you do the questions. Even if you get it right, go over the questions several times.
Hope this helps :)