Lifehacker has articles about just that every quarter, and has generally awesome techie ideas all day long!
As for my experience, use Crashplan, it's very free, goes on as many computers as you want, you can even invite your friends to backup your goods to their PCs (epic if you have common hobbies and data). The free version only backs up once a day but eh.
Thanks, I'll definitely look into it! I will only really be backing up data bi-weekly or monthly, so if it's limited to once a day, that works for me!