Leopards are fairly easy to maintain and to breed. Most leopard geckos are quite easy to handle. Notice I say most because I do have one that is quite the pistol and my kids can't hold him. Out of the 14 that I own 13 are very docile and "well adjusted" I just have the one Diva with a Tude!
The do in fact need both a dry hide and a humid hide. The humidity aids in their sheds. If they do not shed properly and their "old" skin remains, they run the risk of losing a digit.
Substrates can be paper towels, tile, and sand for only adults.
The feed on crickets, mealworms, wax worms as treats, and they need a dish of calcium readily available.
When it comes time to breed and you actaully have a gravid female, look to Albey's Too Cool Geckos site and they give awesome incubation directions. So far I am two for two, and I have followed thier directions explicitly!!!
You just need to decide what colors (morphs) you want to breed.
Hope this helps!!
Suzanne