Free Educational Sites worth Learning from...

[halokid]

I've recently awoken from a lathargic sleep... and now i would like to start up school again.....
my question too you all is.....Do you know of any good sites for learning like a good math site for instance.....something that covers basic math all the way to complex formula? this is  pretty important to me and its  increasingly hard to find good sites nowadays because of all the subscription and spam style sites.....any help on this topic would be appreciated.. i know you guys  have been surfing on the web for longer than i have....hopefully you have come across free sites with the goal to educate humanity.  ;D

[pat]

Try using google to find some sites, a quick search came up with
http://www.math.com/index.aspx I'm sure there are others.