I'm new here but I"m not to XBMC

Just got my first Xbox a couple of weeks ago (yeah I know I'm a late bloomer). Today I took the plunge and I did my first ever modchip installation with the Aladdin XT Plus 2 on a 1.6 Xbox. I think it's working because it displays"Evox" text in the corner.
I'm not sure where to go from here...
I want to play backups, upgrade the harddrive to larger capacity (I read you can utilize a 2TB, maybe more? and check out the popular recommended apps for a chipped Xbox. Pretty sure I need transfer the games FTP but not sure how to go about that with formats, locations, etc.
Do I need to change the dashboard? I think I understand what that is. I believe it's the interface to configure settings, launch games, etc.
I've read about Stock, Evox and UnleashX with I think are all optional dashboards I can use?
Do I need to download the Slayer Evox 2.7 autoinstaller and burn an ISO according to this tutorial?
https://www.youtube.com/watch?v=o0xhsLdYh9k
Sorry for the all the questions!!
-Gumby