When I started, I was working with a Scout troop, and found this site:
This guy had a very basic system. I bought what he used, and slept very well for a year. I later found real camping hammocks, like Hennessy and Clark. This was 2007. I bought a Hennessy Expedition 2.5, and was happy for 5 years. Now, the top of the line appears to be the Warbonnet Blackbird, which is very pricey.
I would try a basic hammock to start out. I would get the Grand Trunk or the TableClothFactory DIY at first, since these are around 20 - 25 dollars, and a simple 8 by 10 tarp. Most campers use Sil-Nylon tarps or Cubin Fiber tarps, but you will drop over 100 dollars for these. I would not spend the money until you are sure you will do this for a while, and you see what you like.
One thing is for sure, I would definitely get a copy of the book "The Ultimate Hang" by Derek Hansen, one of HF's leading contributors. I got so much out of this book. It will introduce you to everything you need to think about, from hammocks to tarps to suspensions, whoopie slings, tree huggers, to the why of what we do. Highly recommended:
Don't let the overload overwhelm. It is a progressive body of knowledge.