The Happy Toolbox shows off some of the newer UV Mapping features in Cinema 4D to create UVs easily.
This new tutorial from The Happy Toolbox covers the foundations for creating UVs in Cinema 4D and some unique features that will make the UV process easier. If you work with C4D R25 and higher, adding new workflows in the UV Mapping toolset will make unwrapping models a snap.
More UV Techniques in C4D.
A previous tutorial from Polygon Pen showed how to UV unwrap a hard-surface model using C4D R25.
Once more, Polygon Pen also walks through creating UVs, creating materials, and finally rendering with Octane Render in Cinema 4D in this related tutorial.