I am looking for a good book to go over the basics of Calculus again, currently I am looking at my schools library and have found this one called: Essential Calculus: Early Transcendentals by, James Stewart. My goal is to over the year probably finish this book or if possible even before and then move on to some high advanced maths, ex. Differential Calculus, Linear Algebra... Now I would like to know if I should review with just single variable calculus or review and study multi-variable as well. I have actually had no training, nor did I ever learn Calculus with Multi-variables. I was also wondering how the author Spivak is when it comes to some of the above mentioned topics? Is there any good book written by him which could also help me out? Thanks.