They don't get much easier than these guys.

a 10 gallon tank is perfectly fine for 1. a 20 gallon long would work for 2-4 adults (with only 1 big male).

diet- any insects really, I feed my WC ones crickets and mealworms dusted with a calcium supplement

substrate can be highly variable. I generally do a custom mix of peat moss, vermiculite, cocofiber. These guys like to bury themselves at times and hide.

give them heat (a normal light bulb 40 watt) and UVA/UVB light during the day. room temperature at night.

give them a decent rock or some sticks so they can climb and bask on during the day.

I give them water by misting twice a day and they drink off of the ground, leaves, glass, or basking sticks.