Keep them on a substrate of slightly damp coir peat so they can burrow, a few hides, a big water bowl or a pond to swim in, basking lamp and feed dusted crickets or roaches.
They will eat small amounts of some fruit but is a rare offering.
EWS like a background temp of 24-26deg and basking spot of 30-34. I have a number from different regions which are slightly different in colouring and size. Some I purchased from SA I don't give a basking spot much in the summer as here background temps can get to 28-30. The deep substrate stays cooler.
I provide UV for mine but probably not that essential as they naturally hang out in shaded areas by water most of the time.
They can be very aggressive to newcomers so you are best to get a small group to raise together. Remove any that are being attacked. Males will not share territory and if the looser can't leave the territory they will be killed. They produce live young which can sometimes be raised with the parents till they mature but is safer to remove the young.
Check out my profile EWS album for photos of some of my set ups.