Marc-Andre Chimonas has a good book and some videos on YouTube that speak to what you are talking about. He only uses a MAPP torch and some very basic tools. Good stuff from what I have seen, at least to get the basics down and decide if you want to upgrade your torch set up, build a real jig, etc.
http://www.amazon.com/Lugged-Bicycle.../dp/145365058X
http://www.youtube.com/user/mchimonas