Hey Tubachris,
As far picking an MOS, you'd want to pick something that you really want to do both in the Army and when you get out back into the civilian world. When I was active duty, I chose to be a jet engine specialist and worked on flat tops and fight decks on fast frigates, destroyers and cruisers. It was a great experience within my 9 yrs. active duty and 6 yrs. reserves but I got tired of getting dirty and smelling of grease and JP5 aircraft fuel that I decided to go into the IT field before I separated from my 9 yrs active duty tour.
Basic training to echo everyone else whose been through it, is all a mind game. Do what is required of you and do the best you can. It'll breeze through before you know it and being institutionalized is not so bad...you'll get used to it. You'll find that BT is not at all what it's like in the real military day to day life. So, with that said, I hope that you find the right MOS, good luck and thanks for your service to our country!
-Gene