I just want to draw attention to zeldawiki.org. It's basically Wikipedia for the Zelda series, complete with story information and boss strategies. I find it super useful to find specific pieces of information (who made what, etc). But, like any Wiki, it's only as good as its contributors, so please go and join!
I like to contribute to the one Jack is making here at TDC :) And I seldom refer to guidance.
There is the Compendium as well, but I just wanted to point out there's another thing like it about.
Thats cool. I checked it out, and I wasnt to impressed with it. I dont know why. But oh well, we like to see sites you guys come by. ^_-
I've done a lot of work on some of wikipedia's zelda pages. I think that's enough, but I love the theories section of zeldawiki. It's very interesting. Maybe I'll add something to that.