For topical searches like this, I find that pinboard is a great place to start.

http://pinboard.in/t:typography/

Tag queries can be limited to popularity as well.

http://pinboard.in/popular/t:typography/

Off the top of my head, you'll want to check out:

- Google Web Fonts: http://www.google.com/webfonts - Smashing Magazine: http://www.smashingmagazine.com/tag/typography/

This is a very similar resource but using Google Webfonts:

http://hellohappy.org/beautiful-web-type/

One of my favorite typography sites: http://fontsinuse.com/

Also this --> http://www.theleagueofmoveabletype.com/

Another page with suggested font combinations: http://typestacks.com/