It was suggested to me that there should be a thread for quick questions.

However...

Don't you love the feeling of discovering the answer to something on your own? That small, delicious piece of happines is exhilarating. I often find that I also find more than I'm looking for and can use the extra morsels as well.

So here are the two best links around.

There's always the good ol' Lexicon.

But my personal favorite haunt (a recent discovery) is the Wikipedia Harry Potter Portal of articles and information.