This tutorial teaches developers how to create an SMS reminder system using Laravel, MySQL, and Twilio's Programmable SMS. The system allows users to set reminders for specific dates and times, which are then sent as SMS alerts when the due time is reached. The application uses a database to store reminder information and a custom daemon command to send SMS reminders at scheduled intervals. The tutorial covers setting up the project, installing dependencies, configuring Twilio's SDK, creating a database and model, building the user interface, and testing the application.