This little skink originated from Papua New Guinea, living underneath fallen leaves and soil. It doesn't like heat that much. Keep this in mind during hot summer days. They are fairly easy to care for but are less sturdy. When their requirements are met everything will go easy, if not they can quickly become ill. 

I keep mine in a riparium of 80x40x40 with a pond in it. Larger is better but from my experieces this size will suffice, my male will sometimes wander around, my female won't, she has her fixed spots and is seen less frequently. 

A lot of people will tell you this animal is really shy and won't be visible very often. My personal experience begs the differ, I see mine almost everyday. I think it is a matter of just leaving them be and don't disturb them to often. I suggest you don't handle them unless needed (eg; when they are ill or you're putting them in a new vivarium etc). Provide a lot of hiding spots as they don't like to be in the open (in the warm area of the vivarium aswell as in the cool area). They like their enclosure really humid. I keep the humidity somewhere around 85% the whole time. If you want to breed make sure that there are also places in the vivarium that are less humid.