£700 Gaming PC build. Help!

I'm planning to spend £700 - £800 on building a Gaming PC,
I need  peripherals (thinking of getting these: http://www.pcworld.co.uk/gbuk/pc-accessories/pc-gaming-accessories/gaming-mice/roccat-kova-optical-gaming-mouse-09600790-pdt.html and http://www.sharkoon.com/?q=en/node/2180)

OS. Do you need a new one?
Yes.
 If you Game-

What kind of settings do you like or what FPS do you want to play at? Pretty high FPS rates, e.g. for minecraft 50 - 100 FPS. 

What resolution will you be playing at? //or would like to play at. Normal / High Resolution.

What kind of games do you like to play? Mmo's and Fps's and RPG's e.g. Minecraft, Dead Island, Battlefield, Skyrim etc

What specific game will you be playing (if applicable) Mostly minecraft, but I definitely will be playing FPS.


I have pretty much no idea what I'm doing, so I need alot of help :/ 

Basically: Build Gaming PC, 800 euro budget, Need everything. Help! :C

I don't prefer any keyboard and usually use a plam grip for mouse, but when using FPS's I use claw grip. 

 

Do you have a specific website of the store you gonna buy custom pc.

Nope                       

Well fuck then.

Curry's / PC World?