I recommend you don't overclock because you need a good MOBO to overclock safely. Also, getting a better cooler is highly recommended before you do any overclocking. Once you have all that figured out. You can use this guide to overclock your CPU.
http://linustechtips.com/main/topic/5103-a-guide-to-overclocking-the-amd-fx-series-and-some-info-on-ocing-in-generall/