Here are some websites that offer information about harps and harp playing:
Puget Sound Folk Harp Society
The International Society of Folk Harpers and Craftsmen, publisher of
The Folk Harp Journal magazine
The American Harp Society
Harp Spectrum, a large informational and networking site
Robinson's Harp Shop, harp plans, hardware, custom harp string making
Harp Seal
The Harplist, an online discussion group
Harps on Wikipedia
Colorado Case Company, custom cases, including rigid travel cases