
Right, firstly, anyone who wants to learn how to OC, its ABSOLUTELY vital you list your system specs.
EG:
CPU
Mobo
RAM (how much and whats its rating, PC6400, PC8000, faster?)
Graphics (for when we are done OCing the system itself)
PSU (brand and wattage)
Cooling (stock, 3rd party, water, other?)
Benefits to OCing are many. A good example to use here would be my own system. With everything @ stock in 3DMark06, I score a rather pitiful 8000 or so. What do I score with everything boosted? Hows 12,400 sound? Over a 50% gain in gaming, and even more in other applications. If your system happens to be one that stands a chance of getting OC'd (yes if, some mobos are very very crappy) The first thing I will ask is that you upgrade your BIOS. The reasons for this are numerous including; To add better stability, fix BIOS coding bugs, add additional and/or better hardware support, etc.
Some tools I advise you to get are;
Everest v5
OCCT
Memtest for Windows
3DMark06
Rivatuner 2.2
I think thats the bases covered. Fire at will..