Two of our most important rules are:
1. Never trespass, and
2. Never go ghost hunting alone.
The reason never to go ghost hunting alone is because so many haunted places are isolated. Safety is a concern. If you encounter someone frightening - living or dead - you should not be alone.
In addition to strange people, many haunted sites present physical risks. Unmarked graves (depressions the size and shape of coffins), exposed tree roots, and snake holes are common in overgrown cemeteries. Old buildings can have loose boards, uneven stairs, and a rodent population.
If you're in a rural or wooded area frequented by hunters (whether or not it's hunting season), it's smart to wear something reflective, or a neon-colored vest or jacket. (They're inexpensive at stores such as Wal-Mart.)
Remember that a cell phone is not enough for safety. In many haunted places, perhaps because EMF levels are high, your electrical equipment isn't reliable. So, never think that it's okay to go to a deserted, haunted place on your own. If you need to call for help, your phone may not work.
There are good reasons to find a local, informal ghost hunting group, and sign up for one of their casual investigations.
However, some people prefer to try ghost hunting with a few interested friends, before getting involved with a group.
It's best to go ghost hunting with people who share your interests. If you're a skeptic, you'll probably have more fun with other skeptics. If you're a believer, investigate with other believers.
But, when you're new to ghost hunting, we recommend keeping an open mind… and choosing companions who are interested in the paranormal but - like you - are willing to objectively consider the evidence.
Recommended reading: Guidelines for Ghost Hunters
Also, Skeptics and why ghosts go missing