I was super excited reading this chapter. Granted this isn't the full book, but for me this was the first chapter that really got into the "meat and potatoes" of everything, atleast in my opinion.

I was also super happy with the Select-Object section 7.4 p49 for me. As explained select-object atleast to a beginner can be a difficult thing to wrap your head around, especially with the -expandproperty parameter.
The example

Get-Service -Name BFE | Select -Expand DependentServices

Was Awesome. For me understanding the expandproperty parameter really came from just investigating how it was different. So although there is a

Get-Service | Select-Object -Property Name,DependentServices

for comparison, I personally think it might be helpful if there was a direct comparison with

Get-Service -Name BFE | Select DependentServices
vs
Get-Service -Name BFE | Select -Expand DependentServices

Since to me the "Select name, dependentservices" is not quite an apples to apples comparison with "Select -expand Dependentservices"

Regardless, I am loving the book and I can't wait till more chapters are released