Hi
I'm trying to learn a similar workflow, ie. taking my ZBrush mesh into 3D Coat for retopo & UVs, then also learning handpainted texturing in 3D Coat. I made a youtube playlist of some UV tutorials, since I haven't been able to find many courses that take you through a pipeline usage more fully.
https://www.youtube.com/playlist?list=PL_9HaT7uJXThatjNpI69KwPXSHTFZPUCA
I'm planning on learning what I can from these and also looking at some courses on Udemy and those from Anton Tenitsky.