So, you want to make money with crochet? There are several ways you can do that, some easier than others. You can sell your finished items to family and friends. You might sell your crochet items to people you know at work, at church, to people you meet in the doctor's office waiting room.
You could set up a booth at the flea market, sell it online at places like ebay, or etsy. You might sell it to people you meet on myspace or other social networks. Sell it by email. Use paypal or some other such service to protect both you and the buyer. It's worth the small fee, I promise you.
You may find that doing all the above is taking too much of your time and taking a toll on your body. Crochet is repetitive movements and that can give you a reason to be sitting in the waiting room of your doctor's office.
But don't give up now! You've come too far to quit now.