I wouldn't go to a graveyard for the purposes of experimentation or because you think it's "witchy" and spooky. Number one, it's disrespectful. Secondary to that, people have been followed home by spirits due to their careless and inexperienced ways.
Visiting the graveyard is an old time practice for sure, but it is for ancestor veneration, done in the most solemn respect. Here's a link for more reading, if you're so inclined.