This tutorial teaches users how to build a Go application that sends inspiring messages via SMS using Twilio Messaging Service to a list of friends, helping them stay connected and inspired throughout their daily activities. To follow along, users need a free Twilio account, Go version 1.18 or above, and create a new Go module with the necessary dependencies installed. They then retrieve their Twilio credentials, create a messaging service, and build the app by sending a random inspiring quote to friends using the `sendRequest` and `sendSms` functions. The application can be run using the `go run main.go` command, and users should see output indicating the number of successful and failed requests.