Andrew there are a lot of very good bows to be had for $250-$350, that are more than adequate for deer hunting. You do not need a $750-$2,000 bow to ethically hunt deer. Do not get me wrong there are advantages to the more expensive bows, but the advantages are not that considerable, they are nice, but not really needed. What you need to start off with is a dependable accurate bow to start with, that is it.

Practice is crucial, as others have said go to a bow shop and let them set you up with a bow that fits you and that they tune up for you.