Not just for servers. I've used PowerShell from time to time, mainly to search folders for certain file types, to rename files, to search for folder hierarchy structure, to search file sizes and such. Small stuff that it does better than AutoHotkey. Reddit has a PowerShell sub that looks decent. They posted the free first chapter to well published PowerShell code book. Anyone want to share their experiences, joys, pains, frustrations?
I'm a dumbass so I never found a difference between command line terminal and powershell other than the difference in background color.
If you need to run a script multiple times or want to copy and paste a script it would be more simple than command line. That would be what separates ISE from command, which you can do in PowerShell.
I essentially only use it when managing Exchange, but I'm also trying to get away from IT or move more into software development.