I have been surfing the NET for as long as I can remember and never have I come across a site that offers so much quality information for FREE! If you want to learn how to draw or you want to improve you should consider DRAWSPACE. I have been a member there for nearly 2 years. There is always something interesting going on. There is a good diversity of members, more than 100 thousand, to keep it interesting.
I have recently been asked to be a moderator there and I whole heartedly accepted. So come on over and see how a virtual world is much more concrete than one would imagine!