Cedarseed

Cedarseed on DeviantArt has a number of very useful tutorials.

They include:

• Emotions and Facial Expressions
• Guide to Drawing the Human Body
• Figure Drawing Express Guide
• Guide to Human Types Part 1
• Guide to Human Types Part 2
• Guide to Human Types Part 3
• Guide to Human Types Addendum
• Basic Animal Anatomy
• Drawing the Horse
• Drawing Birds Part 1
• Drawing Birds Part 2
• Drawing Birds Part 3
• Color Theory in a Nutshell
• And a few others

And here is an index to Cedarseed's tutorials.