Emerald care is very easy...easier than you might think! Depending on the size of the animal, the setups can range from a 17qt. container with water as a substrate to a large acrylic enclosure with water as a substrate. They can live their entire lives over water so it is quite simple.
Most tupperware style containers are easy to put holes in so 'perches' can be put into place. From start to finish the enclosure may take 15 minutes if you have perch material.
Caring for them is also easy! 78 - 84 degrees on average and the water in the bottom creates it's own humidity...
Check out corallus.com for more info if you need it!
Good luck!