Here are some links to TTC sites I've found around the web
www.treeclimbing.com
Here is one of the best tree climbing sites I've found. It has everything including a chat room and pictures and tons of info.
www.theatlantic.com/atlantic/issues/98mar/treesurf.htm
This site has alot of info about TTC. Pluss it has a semi biography of this cool guy name Tom Ness.He's one of the coolest TTC's I've met.
www.buckmasters.com/american_deer_foundation/dis_hunt/adaptive/miscellaneous/treeclimb.html
This site has some good info on climbing knots and how to get to the the first branch of a tree.If you have ever come across this problam wich I have many times, this is a good site to viset.
www.climbnet.com/fish/portaled.html
This site has alot of info on Portaledges.If you've ever thought it would be awsome to sleep 100 feet up in a tree, this is a good site for you.