I believe in the Holy Ghost

Do you, really? Francis Chan called him the "forgotten God"; he's definitely the hardest one to visualize.(I always picture and a huge manta ray for some reason,)

The King James Version and this creed haven't helped by translating this as "Holy Ghost". Most newer works say "Holy Spirit", which I prefer. I don't doubt that ghost was the best word at the time, but these days it just brings up images of spooks.

Let's be clear. There aren't any haints in Christianity. There were a few people who were raised from the dead, and one notable occasion when a man's soul was called up from the land of the dead. Other than that,there's nothing. We worship the living, not the dead.

Whether you believe in him or in some preconceived notion of him, the Holy Spirit is God. He's an integral part of the Trinity, and Jesus said it was better for him to leave so the Spirit would come.

Do yourself a favor and research the Holy Spirit. Do yourself an even bigger favor and pray for guidance first. There's a lot of crazy about him on the interwebs.