My first overclock, give some tips AMD a8 6600k

[Rocking Durgesh]

Hi friends, I recently built a new pc. Specifications are :
AMD a8 6600k black edition 3.9 GHz overclock 4.1-4.2 GHz
Gigabyte GA-G1 sniper a88x gaming motherboard bios version F8
Corsair Vengeance 8 GB ( 2x4 GB) 1600 mhz overclocking memory
WD caviar green 1 TB hard drive
Cooler master K281 mid tower cabinet
Cooler master TX3 evo cpu cooler
Seasonic m12ii evo 620w fully modular power supply.
I am getting a new graphics card about after a month. Now I want to overclock my processor to increase game frame rate. I have a bundled motherboard software easy tune. I overclock to 4.2GHz by this software but by this the system becomes unstable. Tell me a good method to overclock my processor.
I am the beginner in overclocking. I don't know anything. So tell me detail. At what clock can I overclock? How can I overclock safely without damaging my APU?

 

[Rocking Durgesh]

Please not the all things but even some tips!!!!

 

[Gaming Overclockers]

But remember don't overclock with stock cooler, stock cooler are not good. Overclocking is step by Step method, you can't go directly on some frequency and voltages. ... First Download the AMD overdrive software. It will available on official AMD website to monitor your temps correctly. ..First Download thecpu stability testing software prime95 from here :
http://www.mersenne.org/download/
Don't overclock by any software because overclocking is not the thing that can be done by software. First set the XMP memory profile (if exists) enabled to set your RAM correctly. Then Go in BIOS and find the CPU clock ratio, this is the multiplier setting. It starts at a multi of A (some no.)x 100(BCLK)(normal factory settings) to give you A Gigahertz. So up it .5 at a time and boot to os and test with P95 for stability and monitor your temps. Do this for approximately 20 minutes. If it passes raise the multi another .5 and try again. You'll get to a point where either P95 won't pass or your temp will gone so high. If the temps gone high you'll have to stop and work on cooling. If P95 fails then go to the Advanced voltage section in bios and add some volts to the CPU VCore . Stay in offset and just add a bit by tapping on the "+" key and test again.
If your temp goes really high them you have to stop and keep it to cooling. A step will arrive when your P95 never pass or temp immediately go high. Them you have to stop overclocking and you get your extreme speed of your processor. ....