I'm going to take Calc I in the fall and Calc II and III later on and I want to actually understand the stuff intuitively instead of just trying to memorize formulas and then having trouble with the applications, like optimization. I have James Stewart's Essential Calculus Early Transcendentals which is hard to understand. It seems kind of incomplete to me, but I don't really know since I'm no calculus expert. The book my instructor will be using in my Calc I class just came in the mail and it's called Calculus for Scientists and Engineers Early Transcendentals by William Briggs. I haven't looked through it yet but I'm not really optimistic seeing Pearson is the publisher and my algebra and trig books from them were terrible. What texts do you guys recommend that might help me understand calculus at an intuitive level so my knowledge of the subject doesn't just disappear once I forget the formulas?