Useful Math Videos:
My wife, Julie Harland, a math professor at MiraCosta College in Oceanside, CA, has created hundreds of instructional math videos. You can find them, among other things, http://yourmathgal.com. Alternatively, you can access these videos directly at YouTube.com by typing "yourmathgal" into the search box.
Math TV is a website by professor Charles McKeague and students at http://www.mathtv.com . It has numerous short video demonstrations of math problems.
A Great Free Graphing Utility for your PC:
Rick Parris, a math instructor at the Phillips Exeter Academy in New Hampshire, created and regularly improves and updates Winplot, a versatile PC program for graphing equations. You can download it for free at http://math.exeter.edu/rparris/winplot.html. Documentation comes with the software under the Help menu.
An Incredibly Powerful Website for doing all kinds of math:
Check out http://www.wolframalpha.com/. You might start with typing in "Roots of x^44 + 3x^2 - 2x^2 -1" or something equally absurd. Or try integrating something difficult: type in, for example "Integrate (cos(x)^21+1)(x^3+5x+3)".
A Good Math Study Skills Guide:
http://mathcs.slu.edu/undergrad-math/success-in-mathematics
Useful Math Homework Tips:
http://www.purplemath.com/guidline.htm
Other Math Resouces on the Web:
http://sites.google.com/site/harlandclub/Home/resources