Youtube is free, Its almost as good as having someone teach you...Its how I got started...just spent hours watching vids of guys making them and found one I wanted to build and built it.
Don't think about it too much, keep it light, and go slow.
my first bow was boarriorbows' "longbow for under $10", Billy Berger(primitivepathways) makes a simple osage with only a rasp, johnjayrambo uses only a knife to make some of his bows, You can make it as simple or complicated as you want.
Here's a list of a few guys who do build alongs....
Boarriorbows, Paleoaleo, wildernessoutfitters, primitivepathways. jackcrafty, trapperjacksurvival, BCGROVER does awesome bows, turbodog061188, mxred91