The tutorial provides a step-by-step guide to capturing SMS messages sent to a Nexmo number and logging them into a Google spreadsheet using an AWS Lambda function written in Python. The process involves setting up a Vonage API account, purchasing a virtual phone number, and configuring the AWS Lambda function to receive and log incoming SMS messages. The tutorial also covers how to integrate with Google Sheets using the Drive API and Service Account Key. The code bundle includes libraries for Nexmo and Google Sheets, allowing developers to capture feedback, registration, or other data through SMS messaging.