How to set up second computer with win8.1

I previously setup a DVP 11 pro tablet by logging in with my outlook.com email account. Now I am about to setup an AIO desktop . So I am sure the same questions will be asked about logging in with email account and password when first powering up the computer. My questions are: a) Should I use the same outlook.com email and password for the second computer as the first ? Will Win 8...