Going to jerk off a few times a week for some cash probably sounds like the best things ever. With that said it's easier said than done. I have to admit I've never done this before, but from what I've researched you can make some really good money doing it.
Find a local sperm bank in your area and go to get screened. This is the hard part. The rejection rate is very high! If you're an Ivy League grad, with no diseases, and you're tall, than you stand a much better chance than a 5 foot tall homeless man who dropped out of high school. I don't need to explain why.
And from what I understand once you're in they want you to make a "donation" pretty frequently, which they pay you nicely for. I've heard twice a week or once a week, but you also can't masturbate or have sex 4 days prior to donating. This shit just got weird...