HELP NUST PREP (Engineering)

Can anyone help me with Nust preparation? I gave NET 2 without any preparation at all and scored 77/200. I know its really embarrassing but I really want to get into this University and want to score atleast 120+ in NET 4. I have zero prep, and I am really bad in studies. I am aiming for Nust Quetta and will give that test. Can someone tell where should I prepare from?