[Q] Need Help Rooting My Note 3 topic

Hi guys .
I Have no idea how to play with the device and get the most out from it. i want root this device and install new software off Lollipop in my Device.
Model Number= SM-N9005
Baseband version N9005VVUGNH1

i had this from uk on 3 network now i am in Pakistan using this unlocked .

What do i have to do to root this Device which rom is best how can i have Lollipop version in my set .

i will be greatful for ur help

Regards
Faraz