How do you learn? You could do this all by reading and by asking questions of the net.
There are always used bow sets for sale on Ebay - you can get a complete set for less than $100. It will be a mere shadow of the high tech beauties that are being sold now, but almost as good for killing deer for a 10th the money.
http://cgi.ebay.com/ws/eBayISAPI.dll...category=20838
This is a PSE Polaris ( the auction has a reserve, unfortunately) - similar auctions have gone as low as $51.
We'd have to guess at your draw length and what draw weight you would need, but these old bows are usually adjustable.
Then you could shoot and see how you like bow hunting and reward yourself with a new setup once you, say, can keep you arrows in a 6 inch circle at 30 yards.
It might depend on how handy you and your friend are.
beprepn