I would agree, you don't need jigs or anything fancy for wheelbuilding.
I taught myself when I was 14 just using an existing wheel as a template and took it from there. No idea how many wheels I've done in the last 23 years; lots anyway - for myself, friends, and for shops when I was in the trade.
I certainly wouldn't dismiss any literature on it though, its not going to do you any harm to read it.
It really is a simple process though and can be quite a relaxing thing to do. I've never used books or guides, but I do use the DT Swiss spoke calculator and found it to be fine.
I don't particularly like folk who make it sound like a black art, its a simple thing.
Here's a few things I fine which make life easier for me:
Take your time, make sure everything is clean, oil the nipple threads and nipple seats in the rims, make sure the hubs and rims are properly de-burred. When truing, the main thing is to do it in small stages. The inclination is to try and do it fast and adjust the nipples too much; a very small adjustment can make a big difference, so just take your time.
Hope that might help you a little bit.