resource #1 vbulletin.org
resource #2 google
resource #3 users/abusers
There is no guiden, instructions, step by step program,
so look setup a test enviroment, and start do stuff.
download mods, and see how they are made.
when stuck on something, search, ask on forums, vbulletin com and org.
since lynne went to vb.com its been really slow/quiet around here.
plus more and more mod questions end up over there, cause she is the vb mod god.