Math brush up - advice?

In My Humble Opinion
1

I need to take some reasonably advanced math classes (calculus and beyond). Unfortunately, over the years, my math skills have atrophied.

Before I go and sign up for classes, I’ll need to take some placement tests, and probably review some of the usual highschool math stuff (certainly trig, hopefully nothing else, though).

I’ve taken up through calculus before, but its been about 8 years. I don’t want to have to sit through classes where it turns out I already know 80% of the material.

Does anyone have advice for brushing up on this stuff? Are there any internet sites that are particularly good? Should I just grab my old textbooks and work through them?

2

A good spot I go to (I’m in first year university, calculus for science students) for reviewing is http://www.math.com and follow the link to calculus, or whatever you want to review.