Beginner's Tutorial.  This is the one that I originally started out with.
  Advanced Tutorial.  This one looks to focus on character modeling.
  Miscellaneous Tutorial.
  This is a textbook, written by a high school graphics arts teacher.  It is a little outdated, now, but I find it very useful from time to time, if I forget something. 

I even used it for a time when I was working at my local high school as a computer technician / website guy to teach some of the students that helped me how to make some 3d objects for animated gifs and things like that.

It is a 22mb file, and is fully illustrated.