Looking to buy gaming pc and have no idea about specs or anything?

Right so I've always played console and don't know the first thing about PC gaming but I want to buy one I figured buying a ready built one would be easier I can't be bothered building my own I'm not good with technical **** like that I have a budget of about 600 - 700 pounds the main games I would be playing are minecraft, battlefield, gmod things like that basically what is the best all round pc for me?