Fiverr is usually my favorite place for freelance stuff like that. I use fiverr for tons of things like logos, copy, likes, etc. Most of the time, those guys are recent college graduates or people still in college looking to pay for their lunch. They usually do pretty well at it too and since the service is so cheap, if they are good, they get tons of business and therefore tons of practice. Just look around at peoples samples and find one you like. That is usually their style of design. In general though, dont pay more than that.
Also I should note, youtube is a great place to learn more about graphic design.