Bows are like cars, they come out with new models every year and you can sometimes score a very nice bow at a reduced price simply because it is the previous years model. 300 to 500 should set you up pretty well with just a little bit of patience and research on your part.
Decide early on if you want to shoot finger release or mechanical release. This will determine what arrow rest you need and how your arrows should be nocked. If you go the finger release route, avoid the shooting gloves and use a tab. The gloves get a groove in them after a while and the string rolls out of it, affecting acuracy.
Don't bother with an overdraw setup. Waste of money and effort.
Longer limbed bows are more forgiving for a beginner and offer you a choice on release method. Shorter limb bows are far less forgiving and you can't shoot finger with them because of the string angle when drawn. They require a rmechanical release. They are also slightly slower, thus cost a bit less than the latest and greatest "WunderBow". Speed is far less of a concern than marketers wold have you believe, because NO bow is even approaching the speed of sound, so the animal will still be able to "jump the string" on occassion. Trajectory can be manipulated by draw weight and arrow weight.
Have a professional or knowlegable person set up your new bow. They rarely come set properly from the factory. Tiller is almost always wrong, even on high end bows, because they know the user is going to mess with it anyway.
Shoot field points and broadheads of the same grain weight, and arrow shafts of the same I.D./O.D. dimensions. All the same length, too, of course. Buy a dozen custom made arrows, it'll run less than a hundred bucks and will last for years. Shoot six and save six for actual hunting.
re-zero with broadheads before season opens. Even though they are the same weight as your field points, they fly differently because of aerodynamic differences.
When you do get a bow, it is better the shoot six good arrows a day than to plug away for hours, this results in fatigue and bad habits, which become ingrained. Good practice makes good shooting. Sloppy and forced practice makes sloppy and forced shooting.
Follow through! Hold the bow on target until the arrow strikes. Hold the bow with your thumb and forefinger. The lower fingers induce movement upon release and will throw a shot inconsistently.
Have fun with it! If it's not fun, you'll stop doing it and archery is a highly perishable skill. It is NOT like riding a bicycle.