What would it be that you could look up on the internet and cause you to believe ghosts are real?

Everyone knows or thinks they know what a ghost is but they are never certain. I want to know exactly what they are. Secondly we’ve heard of famous ghost in history ( if they are real or not is a different story), but why are just those people ghosts when there are hundreds of other [...]

I do some Paranormal investagations on the side. Thare are many areas in the field of paranormal. Just wante do see if anyone had any idea how many areas the paranormal consists of.