Find a problem you need to solve and sit down and do it with PowerShell until it's fixed.
Don't give in and do it another way. Then find another, and another, etc. You'll take WAY longer at the start, but you'll be building knowledge to use going forward. As well as a script library to pull from for the future. One day you'll turn around and realize you now "know" PowerShell.
It's awesome. :)