Try the regional forums and the build a jib cult:
I built one, I hesitate to give the full details on here because it would take forever and some people would be like tl;dr and it would be a waste of time. Plus there are way better instructions in build a jib. If you have any specific questions i'd gladly answer though.
Shready to Shred.
"If you french fry when you should pizza, you're gonna have a bad time." - Thumper
"You don't wanna be a boner when you land" - LJ