There are a couple of things to pull into focus here. Let’s step though and show you what I mean. Run the below and see what you get back.
Starting with stuff like using the built-in help files.
Even if you choose not to read it all (which you should), at minimum look at all the parameters and examples.
Get-Help -Name Get-ItemProperty -Full
Get-Help -Name Get-ItemProperty -Examples
Then info on the cmdlet / function you are trying to use
(Get-Command -Name Get-ItemProperty).Parameters
Then what you can use the cmdlet/function on.
Get-ItemProperty -Path D:\Temp | Format-Table -AutoSize -Wrap
Get-ItemProperty -Path D:\Temp | Format-List
Get-ItemProperty -Path D:\Temp | Format-List -Force
Get-ItemProperty -Path D:\Temp | Select-Object -Property *
(Get-ItemProperty -Path D:\Temp) | Get-Member
You often cannot do just one thing and get all you need for X or Y, you have to expand your need approach to extrapolate data points.
It’s ok to experiment / try things, but ensure you do some prep before doing so as you can lead yourself to unnecessary frustration. PoSH is all about discovery (lots of trial, error, hacking and kludges sometimes). Yet taking a singular focus approach, well, is just painful and taking a look at how others have done things is always a good thing. Everyone learns from everyone, regardless of level. If you are like me, I am first and foremost a visual learner, YouTube, MS Channel9, TechNet virtual labs, and the stuff Olaf points to are good things.
Here are a few more for you.
Windows PowerShell Survival Guide
And start with lots of examples.
Looking at the .ps* files already on your system. There are bunches of them located here:
Just make a copy of that and open in the PowerShell_ISE.exe and review them.
Heck even in the ISE just hit CRTL+J to see a list of prebuilt snippets to review and understand.