Do U believe on demons or ghosts?

Wow ; lately Ive become more and more obsessed over ghosts and the paranormal . Ive actually had a few experiences ; only one recently from about 3 months ago .
But I bought this amazing book called "The Other Side: A teens guide to ghost hunting and the paranormal" and its helping me a great deal . ^-^
But aside from all that ; I dont think we're alone in the universe . I mean, I believe in a parrallel universe . But I dont believe in anything other than humans and animals and bugs  ^-^
And ghosts o_o