I have never done an OC job before and I really need to so I can keep up with some Current gen games.
my pc specs are

Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz
XFX Radeon R7750 2GB Video card
and my MOBO is an MSI 2A9C

How do i go about OC'ing and what can i do to squeeze performance from my CPU/VideoCard without damaging my pc or having to switch cooling systems?
thanks for the help in advance guys