I have used wrong hotmail email on new acer windows 8 laptop

[LAPTOPDUNCE]

Hi, I have just got a new Acer laptop, its running windows 8.1, on the set up I had to use a hotmail email address to set it up and I have used the wrong one, my question is: can I change the hotmail email address I used to a different hotmail email address (or can I use a different email address like a Gmail one??) I also want to download google chrome when I have got most of the settings right and loaded my photos and docs to this new laptop, I plan to delete alot of the pre-loaded programmes/games/advert crap etc., and use free AVAST antivrius programme (then delete the trial McAfee one preloaded on this acer E5-511 laptop), do you think this will be OK?? I am currently making the 1 single DVD acer drivers/apps back up disk, should I also make the other file which says you should use a USB stick of at least 16gb? (I dont have a 16gb USB stick at present though). thanks LAPTOPDUNCE