Besides the help files for individual cmdlets, the PowerShell Help System provides a trove of information on many topics, such as Aliases, Comparison Operators, If, Properties, Methods, Objects...etc....

Besides the help files for individual cmdlets, the PowerShell Help System provides a trove of information on many topics, such as Aliases, Comparison Operators, If, Properties, Methods, Objects...etc.  The names of these help files all start with:

Group of answer choices