if your serious with this question, all you need is a bow, get it fitted, get some instruction, and practice. All the instructors want to see is that you can handle the bow with confidence, and that you can group your shots. Find someone who can give you some instruction on shooting, and fire away.
Once you pass the test though, its all about practice practice practice. And just because you have your bow license, if you dont feel comfortable enough to take a shot, a responsible hunter wouldnt do it.
As for a crossbow, same thing. However, im not to familar with setup of crossbows.