Here is a link to some videos I made about UCP 4.1.x and the Cluster Service Templates.
The videos were generated on a simulated UCP in the Global Demo and Learning Lab.
One of the videos gives a tour of the "new" UI.
One of the videos explains how the UCP Simulator works.
Another video explains the necessary prerequisites before building a cluster template.
The others show how to build and deploy a cluster template.