Welcome aboard, Jeff. You'll have fun.
The best advice I can give is to simply start reading. Click on any headline that looks interesting and keep on doing it for a while.
You'll start to pick up info immediately. You'll be warned away from errors that others have made. In no time at all you'll start to get the notion of just which engine/drivetrain you want.
And you'll feel confident when you start your build.
It'll be worth it. These bikes need an attentive owner, but they're still a lot of fun and quite useful.