Refretting is one of the most involved tasks on a guitar. It's not a trivial thing. For good how-to info:
http://www.stewmac.com/shop/Fretting...VD,_video.html
I have the book: Guitar Player Repair Guide by
Dan Erlewine as they show there and it is a good book but the DVD set is probably much more thorough on fretting.
I've personally never done any fretting but I've read about it and realized I don't want to; I'd rather pay to have it done by a pro. You may end up spending more on the tools you need than a refret job would cost you. But if you have many guitars that need refrets, and have the desire, go for it. Maybe you could find a
local luthier and ask him to let you watch him do a fret job and/or teach you.
And once you do replace a fret or two, making sure you got the right size fretwire and didn't destroy the fretboard removing the old one(s) depending on how they were installed, it's likely you'll need to do a fret level and dress meaning you have to buy more tools, etc.
And spending the refret job time practicing will make you a better guitarist anyway.
