preparing to start regular BSN Program In the Fall

I got accepted into the BSN program at ESU in east stroudsburg, pa in the fall (accredited by the National League for Nursing Accrediting Commission). I have most of the prereqs done ( such as A&P, general chem, sociology, psychology, microbioogy etc.) but that was like 2 years ago and some of those classes I got Cs in them so should I refresh my mind and study these course before I begin in the fall. I still have my a&p books and psychology, and also i need to sharpen my critical thinking skills so any great books out there?. Is it worthwhile to begin preparing as I know they are making the program more intense this year and passing rate is an 80% or above. If yes how, just wanna be as prepared as possible. Any suggestions would be greatly appreciated!