A new website allows you to look up whether previous tenants died in your home.
If you are very careful to know your equipment and conduct your sessions, the ultimate step of a paranormal investigation is analysis. Many 'hunters' listen back to recordings on site; while this can be useful in directing a session, be sure to go back and analyze later anyway.
Enter La Noria Cemetery and Bachelors Grove Cemetery....or, better yet, just read about them here, because they're two of the most horrifying graveyards on Earth.
A manifesto of the power of the word 'paranormal'.