What computers should i think about gettng?

My birthday is coming up and i wanna get a laptop for school and just chilling. I also wanna be able to play minecraft and cod zombies on the computer. So, should i get a higher end laptop for school and to be able to play games, then get a pc for strictly games in the future. Or would it be wiser to buy a cheap chromebook for school and be able to still afford a pc right away? Which then brings me to my next question. Would a 500$ custom pc be the right price for minecraft and cod zombies and other lighter games? I won't be playing BF4 or anything so is 500 good? Do i need to go higher? Or can i even go cheaper and upgrade later?

I think 500 $ is enough for this games. But buy a configuration not from shops because you will get twice better pc if you get the parts and give them to a man who now know to do it. If you wanna me to give you 500 $ configuration than message me on skype: skaalata