PowerShell has an awesome community and a large amount of learning resources, most of which are free.
Here is a list a PowerShell resources that I can personally vouch for :
Even though the term “DevOps” is fairly recent, its body of knowledge is already pretty vast because it borrows from Lean and Agile.
Also, it benefits from the learnings of pioneers and a vibrant community with lots of incredibly smart people.
Here is a list of technical and not so technical resources related to DevOps :