First off, if you are standing 100 feet away from the target move up! Get about 15 yards away to start. Seems like it helps when people start off close and then gradually move back once you can make groups gloser. Second, anybody can bowhunt, so if you are serious about wanting to hunt for 3 months instead of 2 weeks, you should go out and get a decent bow for under 400$ or 500$. There is a good selection for that price out there sey up professionally to fit you at a pro shop. Once you get that bow home and start shooting at 15 yds, 20 yds, or 25 yds, you should be making decent groups in a few days. Just take it easy on shooting too much a day because you will tire your arm out and start moving too much when you are drawed back. Then the more you shoot the more built up your arm will get and you will be able to many more arrows and not get tired out. Well, all this talking about shooting bows makes me want to go out and shoot mine for a while. Take care, and I hope you become a great bowhunter .
-Kyle Colburn