Seen your scenario many times.

Best thing for you to do is to look in your phone book and find a reputable achery shop to fit you correctly to the bow. Proper tuning, arrow spine, and shooting lessons are all aspects which you need to consider.

Ive seen many " wannabe" archers give it up because they couldnt hit nothing or be consistant - it was just their lack of knowledge and training - not their lack of skill.

I started the same way - but 18 years ago.