Getting on the waiting list does not happen automatically. Make sure your nephrologist knows you want a transplant, and that however it happens, you do actually get referred to a kidney transplant center.
CSV (Comma Separated Value) was a file format devised to store tabular data. It uses commas to separate each entry in a row and the newline symbol to go to the next row. Excel is a more recent spreadsheet application from Microsoft and it saves the data with its own file format. Excel is way more superior compared to CSV as it is able to do a lot more to the tabular data. Formatting is one of the biggest feature that comes with newer spreadsheet applications.
The result of an Import-Csv command is a collection of strings that form a table-like custom object. Each row is a separate string, so you can use the Count property of the object to count the table rows. The columns are the properties of the object and items in the rows are the property values.