how to learn engine building???

[white 2g awd]

allright, so i just got my ged....i don't want to hear it about not finishing high school, but anyways i'm looking at maybe taking classes here a dmacc and trying to build my cw'ed engine in my dsm, problem is i don't think they really focus on engine building, especially performance building....i don't know yet, i have to contact them on thursday to talk to a counselor about it, but i'm wondering how some of you guys learned to do your engine swaps, and build the engines, i know alot of you taught your self, and just did it, but i don't really want to cost a $1000 mistake if i do something wrong with the engine. any advice???