demonssoulspastre

Demon's Souls

Wiki, wikidot is the only wiki you really need
http://demonssouls.wikidot.com/

Character Planners
http://www.demonssoulsplanner.us/
https://mugenmonkey.com/demonssouls/

Tips and Tricks
http://wikicheats.gametrailers.com/Demon%27s_Souls_-_PS3/Quick_Strategies : not sure how kosher this site is but it has some interesting stuff in it.

If you want anything else added please tell me in the thread so I can add it.