WHERE TO LOOK
These are some ideas for places where you may have luck finding something, when starting an investigation.
Alot of people will tell you that a cemetery is likely to be haunted. In my opinion, i think that is VERY unlikely. Iv read alot of material that will tell you this is true but theres alot of material that will tell you that theres no reason for a cemetery to be haunted. Nobody dies in a cemetery most of the time. Spirits often haunt the places where they dies or a place that had significance to them when they were alive. A cemetery probaly isnt haunted unless somone was buried alive there and dies, or killed there, or some freak accident like that. Another theory is, that there is sometimes a guardian spirit , the first person buried in a cemetery. Im not sure if thats true either.
Schools- Schools and former sites of schools may have the build up of psychic energies and imprints of all the highly emotional events that have happened there.
Theaters- The actors have run the gambitof human emotions inside the walls of a theater plus many have interesting hauntings attached to them.
Battlefields- These are great locations simply because of their nature. Many violent deaths in one area will always hold some spirits and psychic energy there.
Churches- There is a long history of the faithful returning to the church they worshipped at.
Also, Hotels, and Historic locations.
but anyplace could be haunted of course :)