Woodworking Guild of America
Another source of some great videos (and lots of other stuff) about woodworking.
New to Woodworking
A great place, as implied by the name, for getting started with woodworking.
The Wood Whisperer
An excellent (my favorite so far) website for getting started and moving far into wood-working.
Timberfram Tools – Woodworking Joints
A great explanation of wood-working joints.