if it's a shopping list your after.. here you go.
1. can of greatstuff foaming insulation (red can)
1. tube of 100% silicone black
1. caulk gun
1. sheet of fluorescent lighting "Egg Crate"
4. feet of 1.5" PVC cut into 3" pieces.
1. 40x20inch minimum piece of vinyl window screen
all available from homedepot or Ace hardware. these items will be used to create your background and false bottom.
as far as plants, animals, dirt rocks and decorations..... well that is only up to you and your imagination.
take a look
here and
here Here Here
Those all gave me inspiration while in the "pondering" stages with mine.. the 44 hex (first link) is my build so far. there were so few step by steps out there, that I decided to log mine as I go to help the future newbie.
I would FIRST AND FOREMOST decide on the animal you want to keep, and build it to suit them. in my opinion, no dart frog is the "beginner type" but luckily there are a few other frogs that are, and that will inhabit the same environment. allowing you to graduate to a dart frog later on.
Good luck with your build, and keep us up to date on your progress..
-Chris