You'll get a load of different opinions from people. But as a semi-new Bow Hunter i'll tell you my experience.
I went into the a bow shop and had them "guesstimate" my draw length and asked for my budget. They ended up showing me a bowtech carbon icon, they also had hoyt and elite and mathews but most were out of my budget. I didnt want to go too cheapo or brands like PSE because of some stories I've heard (although Im sure will work fine).
They watched me shoot and we did some tweaks to draw length, sights, etc. I would recommend a drop away rest (which did not come w/ the bow), and quality arrows and broad head (fixed is my preference).
I would start with less draw weight then you think to get the hang of it and be able to get a lot of practice in without getting fatigued. Then turn it up yourself or have the shop do it, then re calibrate your sights.
I would then shoot a lot in different positions (shooting, standing, kneeling) in different clothes (jackets, wearing ball cap or face mask or whatever you may be hunting in) and do a bunch of short sessions instead of fewer long sessions before you actually go into the field. Watch videos too- i like bowhunt or die- to see how people deal with things like deer in different positions or distances, wind, tactics, scents, camo, noise, etc.
Also regarding targets as mentioned above, one mistake I did when practicing with broadheads was pulling them back out of the foam target, this destroyed them fast ! Now I unscrew the broadhead off if it passes through, and pull the shaft out. You'll get much more life out of it that way. Also practice w/ 3d targets if you get a chance.