NOTE - If you would like a Google Sheet document with some data in it to practice these lessons, use this document. It contains the same data I used in several of my lessons below.
Create a new Google Sheet to help you organize your list of parent contacts. In row one enter all of the headings of information you will want to keep for your contacts (i.e. Parent Name, Student Name, Parent Email, Parent Phone, etc). Format the document so it is easy for you to read. Note - you could also achieve this same thing by creating a form with the questions being the list of items for row 1, then use the create sheet button in forms to create the Google Sheet. Forms and sheets work together nicely if you plan accordingly.