Hey all just thought I'd share some links with you so you know what I'm reading up on.
http://en.wikipedia.org/wiki/Ghosts - I know wikipedia isn't the best source of information but it's a starting point.
http://pulynyaleg.neonblade.com/ghosts.html - Found on wikipedia. As I live in Wales this is a potential site for investigating, although access to the castle is hard to get.
http://www.true-ghost-stories.com/GhostInfo.html - I'll probably read some of the stories too to see if there are any places nearby that I could visit.
http://www.angelsghosts.com/ghosts.html - Could be interesting.
http://www.ghost-mysteries.com/ghost-guide-index.php - A guide to ghost hunting for when I go investigating.
http://www.haunted-britain.com/Haunted_Wales.htm - A list of nearby hauntings for me to look at.
http://www.hauntedwales.co.uk/ - And another site about nearby hauntings.
I'm also hunting through the bookshelves in the house as I'm sure there are some books about ghosts around somewhere.
I'll keep you all updated.