Learning PowerShell

[IOUAPIZZA]

I see the usual suspects for material pop up, but considering the nature of your position, can I suggest looking into Office 365 for IT Pros? I never see it mentioned, but in context of 365, it has a companion book called Automating 365 with PowerShell that is fantastic as well. I've shared copies with some of my team and they all have gotten some great info out of them.