TITLE: What are the best sites to get caught up on Calculus?
QUESTION [5 upvotes]: I'm going back to college this summer and will be taking engineering statistics and calculus based physics.  I dropped out of college about 4 years ago and took calculus 1-3 before leaving.  I'm worried I have forgotten all of my calculus and won't be able to perform in my upcoming classes.  What is the best way to get caught up and what are some web sites that will help me catch up?
Thanks

REPLY [2 votes]: Don't forget to thoroughly review your trigonometry and algebra.  I have been a teaching assistant for many calculus classes and I have found through experience that many students have trouble with calculus because they have not mastered the prerequisites.