Artist Stan Prokopenko has some great drawings tutorials. For those who are interested, do yourself a favor and check 'em out!

How To Draw The Head From Any Angle; Pt. 1

http://www.stanprokopenko.com/blog/2012/08/video-draw-head-angle-1/

and How To Draw The Head From Any Angle; Pt. 2

http://www.stanprokopenko.com/blog/2012/08/video-draw-head-angle-2-front-view/

There's a few more, so have at it!