How do I improve my psychic ability?

Being psychic runs on both sides of my family. Before my dad died, there was an instance where he seemed to give me his unique psychic skills--felt like a lightening bolt when he grabbed my arm--and my psychic abilities have grown really strong. Friends are both fascinated and scared of my abilities and have asked questions of me, which provided them lots of information. Then they get scared and don't talk to my anymore. I want to use my ability to be useful and don't know who to talk to or study from.
Any suggestions?