RE: affordable beginner bow
I agree with Elkcrazy...If this is something that you think, or KNOW, you want to do this, don't skimp on the equipment. It will cost you more in the long run because you will want to upgrade within 2 seasons. It would be worth shooting a lot of bows and keep your eyes on the classified section or eBay for someone that recently upgraded their equipment.
Most avid bowhunters take very good care of their equipment and like to keep up with the technology and strokein deercamp. So there may be a quality bow out there that you may have to replace the strings or do nothing at all. Most bows don't their value very well regardless of the shape they are in and most people will take a bath on their used bow.
Don'tsell yourself short on equipment.
Good luck and happy hunting!