I used Thomas's Calculus in college, & as a complementary text I used the Calculus Lifesaver. Thomas's Calculus has plenty of problems to work & for the most part isn't too confusing, but at times I also read chapters from Stewart's book which was more down to earth, and I also used Calculus by Earl W. Swokowski
http://www.amazon.com/Calculus-Earl-...2395859&sr=1-6. Can't really beat the rating on that one.