Special software is required to use some of the files in this section: .avi and .wma.
Tips for Success in Undergraduate Math Courses by Jessica Purcell. Some very good advice for college calculus students. Read this carefully and do as it suggests.
Common Errors in Undergraduate Mathematics by Eric Schechter
The calculus page problems list problems by D. A. Kouba at UC Davis
Assorted Applets
The Web page contains a plethora of interesting resources to help you visualize important mathematical concepts. Most of these are Java applets, which run interactively as plugins in your web browser. To use them you must have Java enabled in your browser preferences  by default, it probably is already.

Some Java applets from MIT's OpenCourseWare page for 18.013A:

Function and Derivative Animations, by Przemyslaw Bogacki and Gordon Melrose (.avi files, can play e.g. with
Windows Media® Player)

Java applets of secant lines and tangent lines (from IES,
Manipula Math):


Animations of secant lines approaching (or not approaching) tangent lines (by Douglas N. Arnold):











Some nice integral applets (by Daniel J. Heath):








Cycloid animation (
AVI) (by Przemyslaw Bogacki and Gordon Melrose)


Computing arc length (
AVI) (animation by Przemyslaw Bogacki and Gordon Melrose)



Several polar curve animations (by Przemyslaw Bogacki and Gordon Melrose):

Converging and diverging series animations (by Przemyslaw Bogacki and Gordon Melrose):
 1 / N^{(1/2)} (AVI)
 1 / N (AVI)
 1 / N^{2} (AVI)
 1 / N^{15} (AVI)



And just for the fun of it, there's the Quadratic Formula Song (WMA  1.1 MB).