Please Help an amateur Root and then move the tab 3 from 4.1.2 to 4.4 (kitcat) I am lost


Nov 11, 2014
Hello all!!
I really hate to be a pain in the you know what. My 2 little kids and I have Galaxy Tab 3s (7 inchers). I have tried everything to move things to the sd card or have new things saved to it, etc. It doesnt work. I have been at this for days... Im dead tired.
1. I guess I have to root the phone 1st. From what Ive read frameroot is the easiest...???
2. Then I have to move from 4.1.2 to 4.4 to be able to do these things with tab...

I have no clue. I think with Framaroot I can get it rooted... But my worries are after that to go to 4.4 kitkat. I dont want to lose any data... I dont quite get the whole ROM thing change... Any help would really be appreciated...