Just go from website to website, and read their tech section articles.... I can think of a few off hand... Corral, Stangnet, Mustangworld (yes even they have tech), fordpower, Modulardepot, Svtperformance, ect... Just about every message board based website has a tech section...
As an example, I rebuild my traclock using MFE's instructions, rebuild my T-5 and a friends T-45 using Jim Neighbors instructions, plus tons of other stuff...
Reading is half the battle, then getting the confidence to do the work yourself (even messing up a few things first), is the second half...