I looked at the Microsoft Virtual academy videos [1], they cover a lot of basics but were usefeul, having the creator of powershell teach the course helped understand the philosophy behind it.

When searching for tutorials online, "the scripting guy" was useful, but more importantly I make sure to search for powershell v5, v4, or v3 tutorials. - There are lots of "old" tutorials, but I think there were major changes between Powershell v1, v2, and v3, so I try to avoid those, especially regarding modules

[1] https://mva.microsoft.com/en-us/training-courses/getting-sta...