A few useful resources for those with Hennessy Hammocks:
Tying the knot based on the inscription on the back of the hammock bag was remarkably incomprehensible. Fortunately the internet is to the rescue with handy hints such as the below. This was how I learnt the knot, so I’m sharing it with you…
http://www.theplacewithnoname.com/hiking/sections/gear/shelter/hknot.htm
He also explains how to do the snakeskins on these, which aren’t as obvious as you’d think… and shows how you can use a hennessy hammock as a chair.
You can of course use this wonderful device from hitchcraft to tension your ropes.  More expensive than knowing your knots, but easier and quicker.  It has the added benefit that when you first setup your hammock, your ropes will stretch.  If you’ve tied knots which require complete undoing and redoing you’ll end up doing this several times.  Which isn’t good in the dark.
Other information is on http://www.hammockforums.net – they have a hennessy specific forum with plenty of useful videos, including one called the 101 by trekkingnut which shows you what to do with your shoes, among other things…http://www.hammockforums.net/forum/showthread.php?t=19572