Any online websites for pre calc help?

<p>Hey guys, do you know of an websites that would be helpful for studying pre calc?
I've tried khan academy but I'm looking for something that goes more in depth, lesson by lesson.</p>

<p>Bump! Anyone??</p>

<p>You don’t have a textbook? Just read it and look at how the example problems are done. That’s what I did all the way through multivariable calculus.</p>