I am interested in the Total War games. I was wondering what are the pros and cons of buying and downloading from steam vs buying the games individually from the store. For example, what if I decided later to get a new computer in the future, would I be allowed to download these to the new computer without being charged from steam again? Does the games from steam come with a players manual? I don't mean to sound like a noob but I am new to gaming. Any input would be appreciated.