This tutorial teaches how to create an SMS portal using Laravel and Twilio's Programmable SMS service. To start, you need basic knowledge of Laravel and a local MySQL setup. You then install the Twilio PHP SDK via Composer and set up your Twilio account credentials. Next, you create a new Laravel project, install the necessary packages, and configure your database settings. You then build a simple user interface for adding data to your database and sending out SMS notifications using Twilio's Programmable SMS service. The tutorial covers how to validate user input, store user phone numbers in the database, send custom notifications, and create routes for your application. Finally, you can test your application by registering a new phone number or sending custom notifications to selected users.