how do you talk to ghosts


Easy, just start talking to him.
Now, if he talks back, you'll have an unusual situation.

they are dead, so you can't talk to them
I suggest an Ouija Board.
The Ouija, also known as a spirit board or talking board, is a flat board marked with the letters of the alphabet, the numbers 0–9, the words "yes", "no", occasionally "hello" and "goodbye", along with various symbols and graphics. It uses a luncheonette as a movable indicator to spell out messages during a séance. Participants place their fingers on the luncheonette, and it is moved about the board to spell out words. "Ouija" is a trademark of Hasbro, but is often used generically to refer to any talking board.
THERE'S JUST ONE THING YOU NEED TO KNOW!
ONCE YOU USE ONE THERE'S NO GOING BACK!