The tutorial provides a step-by-step guide on how to create an iCal calendar feed using PHP and Laravel Lumen. It covers the basics of the iCal format, setting up a new Lumen project, configuring the database, creating a migration, seeding data into the database, building the iCal object, and creating an endpoint to test it out. The tutorial also includes instructions on how to test the iCal feed on different calendars such as Google Calendar and Outlook Calendar.