Hi there,
EasyTune6 is a simple programme to get you started with overclocking and, as such, can be a useful tool.
There is also AMD Overdrive, which is another software programme for overclocking, but it is a little harder to use.
For the best overclocking experience though, you really need to get into the BIOS and make the necessary changes. This is harder to do but has the advantage of the overclock being there from the moment you switch on the PC, instead of waiting for everything to start-up.
Overclocking on the 9 Series boards is a little different to how things used to be done, because of the LLC design of the new boards. This means you need to have a higher starting Voltage for the processor to compensate for the Voltage drop that this design introduces, to protect the CPU.
Best advice would be to play with EasyTune6 first and let that find what is best for your system and then, once you have some figures for CPU Speed and Voltages etc., start looking into tweaking the BIOS.
If you have specific questions then feel free to ask them and someone is bound to be able to help guide you through the various stages.