Looking too buy my own laptop soon but as my technical knowledge is virtually zero im abit stuck!

My budget is around £300 but i don't mind buying a reconditioned 2nd hand one off a computer shop etc...

I really only go on a few sites passionford, facebook, ebay and reserch abit on google etc and also want it for itunes aswell so it dosnt have too be anything special

Only after somthing reliable with decent protection, so what would you reccomened?