Serioussly this really good guide for newbie in bitcoin 
But if you want to really secure as possible you can buy a cheap laptop that and make it just for bitcoin wallet , if the wear on the computer that you often play could have been attacked by a virus and lose all bitcoin.
But if you want to really secure as possible you can buy a cheap laptop that and make it just for bitcoin wallet , if the wear on the computer that you often play could have been attacked by a virus and lose all bitcoin.