as listed above, Overclocking guides would be a good place to start. Study them thoroughly before any attempt to overclock, as it is crucial that you understand what your doing and are confident, if you are still not sure about overclocking after some guides, go through others. It is crucial to do this as if you do something incorrectly, you can critically damage and even destroy your CPU due to over-volting.
Tom's hardware have some good overclocking guides - check this one out -
Try taking screenshots of your BIOS at stock settings, then give the OC Guru software a try and check and see what all it changes in the BIOS, then might find a OC guide on the net and take it from there
as listed above, Overclocking guides would be a good place to start. Study them thoroughly before any attempt to overclock, as it is crucial that you understand what your doing and are confident, if you are still not sure about overclocking after some guides, go through others. It is crucial to do this as if you do something incorrectly, you can critically damage and even destroy your CPU due to over-volting.
Tom's hardware have some good overclocking guides - check this one out -