|Micro Torches 101, Part 1: The Which, What, and Why of Butane Torches by Kate Richbourg|
Please accept my apology. I have pulled this article from my blog by request of Interweave/Jewelry Making Daily due to copy right infringement.
But here is their site for a Free Torch Tutorial that is very interesting.
Sorry readers. I have been blocked, so I can't even show you the links.