You can use it in a similar way to Import-CSV whereby every row is an object.
If this is my spreadsheet:
| FirstName | Surname |
|---|---|
| Willow | Rosenberg |
| Buffy | Summers |
| Xander | Harris |
| Tara | Maclay |
| Joyce | Summers |
| Rupert | Giles |
Let’s say I want the first name of all the people with the surname Summers.
$excelData = Import-Excel Names.xlsx
$firstNames = $excelData |
Where-Object {$_.Surname -eq 'Summers'} |
Select-Object -ExpandProperty FirstName
$firstNames