The vast majority of the community will not need to take any action at all! However, If you would like to prepare for lower quotas that will be implemented later in the project, you can review your existing content in Google Drive, Google Photos, and bMail and delete anything you are comfortable with deleting, especially backups of backups, archives, and extremely out of date records/emails. This is just a recommendation; you are responsible for determining what content you are willing to delete. For more information please check out our information on what you can do right now.