I primarily bow hunt here, but it's a bit different in the western US. 15-20 yard shots are few and far between...30-45 tend to be the norm on mule deer. Most of the folks I hunt with are proficient to 60 yards, but it takes a ton of practice.
Having someone to help your form is nearly a requirement since you can't see your own posture at full draw & release. I would find a 3d archery club and start going to some of their meet-ups. Those folks tend to offer a good balance of target and hunting experience based feedback.
There's a great activity specific forum out there called archerytalk. Tons of info there.