3delight/blender tutorial?

any helpful resources apart from renderman and 3delight official documents
i can do very little with that i can’t even render the cube properly (it’s got that smooth shader all over it) and the lights put me way off
also i know to put a proper shader for every material but that’s about it
for example how can i do displacement there’s no such a shader for 3delight
any good place to start?