Does anyone know of any posted info on how the various iPhone mods (jailbreak, activating T-Mobile, etc.) work?

I'm curious, and I'm having some minor problems that I figure I might be able to solve if I knew more about what was going on.

TIA for any info.

PS: If none of this info is yet posted, I might consider building such a database myself. I guess I'd have to ask the developers of the various mod tools for the information.