New to Sony Devices

Ok so im by no means new to rooting and roms and the like since ive rooted every phone ive had over the last 5 years but for the life of me i can not seems to figure out these sony devices. So i downloaded and flashed the new 5.1.1 ftf thru flashtool last night and everything is working fine. I have google and searched thru xda about ways to root and i thought the first step would be to install XZdual recovery but i downloaded nuts installer and ran it which seems to have worked but it still does nothing whether trying to manually enter recovery or doing it thru adb. Ok guys what am i doing wrong? Any help would be great!