So, as I tend to start my posts, I must apologize for not being as timely and frequent as I'd like, but none the less here you are, so you either 1) forgive me or 2) just found this site and theref...
Reflection Glossiness examples
Refraction Glossiness examples
Refraction Layer - Fog Multiplier examples
Reflection Glossiness and Fresnel IOR examples
IES lights files for Vray
water material (самый простейший для новичков так сказать)
Emissive Materials - Color and Intesity example chart