https://www.pluralsight.com/courses/windows-powershell-extending

You can accomplish a lot with Windows PowerShell right out of the box, but you can do even more by extending what PowerShell can do. You can extend PowerShell by installing additional commands and scripts. In this course, Extending Windows PowerShell, you'll learn how commands are packaged, installed, and managed in Windows PowerShell. First, you’ll discover how to use PowerShell commands to find other commands and scripts. Next, you’ll explore how to find and install external scripts, written by members of the PowerShell community and you'll learn how to do all of this from a Windows PowerShell prompt. By the end of this course, you’ll have gained a deeper understanding of the different ways you can extend PowerShell and make it work for you.