mrlangemath.com - has links to graphing calculators, textbooks, all sorts of good stuff.
www.purplemath.com
www.algebra.com
mathforum.org
Of course there is no substitute for hard work and participating in class,
but these sites may be of some help.
There are probably many more. I suggest typing the topic of the day in your favorite search engine and see what comes up.
Good Luck
