I'll add this one for general technique: http://www.tothewoods.net/HammockCamping.html.
And here's the site of the Blackbird, one of the most popular hammocks out there right now: http://warbonnetoutdoors.com/blackbirds.php.
All of my hammock gear is from Warbonnet. I have the Blackbird, tarp, underquilt, and overquilt. He makes great stuff.