If you're STILL looking for easy ways to learn PowerShell and you haven't been to one of my talks about learning PowerShell from INSIDE PowerShell, then have a look at PowerTab. It's free and it's so useful I may trade in a less useful body part or two in exchange 😉
One of the awesome things is WMI tab completion. Install PowerTab, start typing
and press TAB.
You should see the following:
This is enormously useful.