Videos:

Atl atl:  Ways of the Earth
Atl atl with naturally curved handle. Made with deer sinew. Ways of the Earth

Atl atl Basics:  Matthew Graham  Good explanations of technique and demonstration of form.

Atl atl vs. Steel Armor:  American Heros Channel  So this one is just plain cool- and amazing.

 

Articles:  

  Make a Survival Atl atl and dart with only found materials  This is a good article which contains good explanations and photographs to help understand the process.

Photographs: