Since there are more motherboards than processors, or 'reference' graphic card designs, it is somewhat of a courtousy to link to your motherboard, including Rev, when posting about Overclocking --- or at least it used to be...
Gigabyte MA770-UD3 Rev 2.0
http://www.gigabyte.com.au/products/product-page.aspx?pid=2939&dl=1#ov
(There is also a Rev 2.1, and this is not
my board)
It goes without saying, you're more likely to get quality advice & what not this way.
If you go gradually you won't damage the hardware you'll just hit a point where code and/or data goes corrupt. (Just avoid defragmentation while overclocked).
Generally everything can handle a +/-5% voltage difference too.
It takes real effort to destroy hardware, even the heatsink detaching from the CPU while running 16 instantances of Prime95 won't kill a processor there days. - They've all got overheat protection that kicks in very quickly.
'Hot' for a CPU is over 75 Celcius.
(On some processors and GPU's it is over 85 Celcius).
Normally when a system screws out it is because the SATA clock is sync'ed or run at a ratio to the system clock, if it is too far from 100 MHz it'll go screwy and corrupt data. (ie: You could copy from a optical disc to the HDD and the data won't match, it's just a matter of isolating the part, or parts, that didn't keep stable).
What is running at the core voltage of 1.184 though?
It's not like the old days when you had to use graphite to modify an AMD processor and they lacked overheat protection, etc
Once people know the chipset(s) on your motherboard they can relate better, as different vendors will use the chipset on their designs, the BIOS might differ significantly, but the features are usually all in there.
PS: [Ctrl]+[F1] at the Main Menu of the Gigabyte BIOS will unlock additional hidden features in some of the submenus.
Even if you do not understand them, yet, it helps to know that they exist and document them all the same as they might change in relation to something else. It's part of the learning process.