Below is the list of free drawing lessons you can find on this site:
Introduction to Drawing in Pencil
Preparing Your Drawing Surface
Keeping Your Drawing Paper Clean
Measuring for Proportion
Drawing Symmetrical Objects
Using a Tortillon or Stump
Drawing Animals
Drawing a Still Life
Drawing People in Action (Part 1)
Drawing People in Action (Part 2)
10 Tips for Drawing a Face
Drawing Using a Grid
Contour Drawing
MORE DRAWING TIPS
How to Draw Braids by Baylee Jae (Video)
Erasing Woes by Michael Goldstein (Video)
How to Draw Hands by Mark Crilley (Video)