Rangeball brings up a good point. As important as arrows are, I find the thing that creates the most shooting problems for beginners, are the crummy strings they are shooting on their bows. If I was to prioritise the areas of concern when getting a new bow, it would be like this.

1) Make sure string is the best quality, pre-stretched and tied correctly. Once every 30 days, critically measure your ATA and brace height, looking for any movement that will signal that your bow may be out of tune, due to string creep. Most factory strings are not at specs, on a brand new bow. And, the ones that are, usually stretch/creep substantially.

2) Buy the best arrows and then pay to have them tuned through a Hooter Shooter. There are guys who will do this for about $40.00. In lieu of this, you can use the old method of marking your arrows and then plotting where they hit over many shots, and then tune them or cull them accordingly.

3) Fine tune your draw length until you find the one that allows you to hold the most steady. Once you find it, you'll know. Don't be surprised if you have to shorten it and inch or two.

4) Group tune at least twice with your new bow. I suggest once after 100 shots and another time after about 1000 shots.