There is also another larger forum you may want to take part in provided you are interested in traditional art or digital painting more than pixel art.
www.conceptart.orgThere is also this guy:
http://www.youtube.com/watch?v=BsQ1WVyPHvUwho has a very nice series of videos about drawing.
The first one (linked) kinda focuses on tablet users (I still recommend it), but the second one and beyond really pick things up.
He will teach you how perspective works in an easy to understand way, and focuses a lot on the basics. He provides good exercises to do as well.
I'll second the recommendation of Andrew Loomis' books for anatomy. Also look up the Vilppu Drawing Manual for another approach.