Knowing the history could be very beneficial, you may find the names of some of your resident spirits which could help in talking to them. Short of finding out that your home was the site of a grisly murder or other such crime there shouldn't be any problems. Doing something may help to put you more at ease which in turn may help the spirits be at ease. If nothing else on the bright side they only seem to play a few tricks or startle you, could be a worse, you could be stuck with a poltergeist or a very negative entity, which in the case of the later probably be a good idea to move.