With all the different modules, capabilities and properties, it's hard to keep up with the language. Luckily there are numerous resources available to us.
Since I often use my own blog as a resource, here's a list of sites to keep me and you successful and informed.
Microsoft PowerShell - From the "mothership"
Idera Community - Nice group, lots of info
PowerShell Scripts Blog - A few hundred scripts to choose from
Get-PowerShell - A little crusty, but over one hundred examples
A Taste of PowerShell - Quite crusty, but lots of useful examples
Also don't forget Spiceworks and Experts Exchange for tutorials and problem solving.