The tutorial covers how to generate vCards (.vcf files) using Ruby and send them to contacts via Twilio Programmable SMS. It requires a Twilio account, a phone number, and Ruby's latest version installed on the machine. The process involves creating a new folder, installing required gems (bundler, vCardigan, and twilio-ruby), generating a vCard file, serving it on Twilio assets, getting a Twilio phone number, adding code for sending the vCard, testing the script, and running the final command to send an SMS with the vCard. The tutorial also covers using arguments from the Ruby CLI in the code through bundler.