I started my "career" as a traditional bowyer by reading the Traditional Bowyer's Bibles, Vol. 1-3 and later 4. I basically figured things out as I went, learned about the woods I had ready access to, learned what types of bows I like to make, like to look at, like to shoot, like to hunt with.
A few things I'd suggest to a first time bowyer:
1. Spend as much time learning to make good arrows as you do learning to make good bows,
2. Don't back your bows,
3. Make sure the wood is dry,
4. Once you get the bow bending enough that you can brace it, put the file away and only use a scraper,
5. Let the notions of other's inspire you, but don't allow yourself to be held captive by the way other's think things are supposed to be done.
Other things will probably come to mind, but this is a good start.