A Writer's Resource

Name of site: What's in a Name?
Type of link: fandom - hp, resource - names
Warnings: some spoilers for the HP books.
Explanation of link: An resource for looking up information about the names of the HP characters and what they mean.

Name of site: The Harry Potter Lexicon
Type of link: Fandom - HP
Warnings: Spoilers for all books now
Explanation of link: THE HP site.  The first place to stop for any information on the Harry Potter books.  Lists of so much here.  If you can't find it here, you'll probably have to dig through the books to find it.

Name of site: Harry Potter Wiki
Type of link: Encyclopedia
Warnings: Spoilers for all books
Explanation of link: A user-run encyclopedia for the Harry Potter series.

Name of site: The Akashic Record
Type of link: Encyclopedia
Warnings: None
Explanation of link: A lovely compellation of information about the people and things in the Harry Potter books.