I’ve got several questions so please bear with me. 
1.A. How can I sculpt translucent or transparent objects? I’d like to do some ghostly figures and wondered if this was possible.
1.B. How can I create water for a the base of a turntable? Would it be the same process as the 1.A. above?
2. Is it possible to polypaint metallic colours and glossy/wet effects onto a model? If not, is there a programme I could use that allows this? I’m aware of the metallic materials, but I wanted a matte look with a few shiny paint chips. 
3. I’ve seen some people create absolutely stunning renders of their models, some so good they look real! From what I’ve pieced together they’ve been using something called VRay or MentalRay but I can’t find this anywhere on the ZBrush website. Have I missed it? Where can I find out more about it?
4. Thank you! 