System Center Virtual Machine Manager for ...dummies?

Hi folks,

I wonder how one can learn SC VMM 2012 r2 from the very scratch?

There are some articles on the web but not many courses especially when we talk about 2012r2. The only exam that is, is 70-745 but this one is for 2016:

https://www.microsoft.com/en-us/learning/exam-70-745.aspx

Plus there is only 1 book available on the market.

https://www.microsoftpressstore.com/store/exam-ref-70-745-implementing-a-software-defined-datacenter-9781509303823

Any clues would be welcomed. I need some videos and course with labs...