In this tutorial, the author demonstrates how to use cURL and jq commands to extract transcripts from audio files using Deepgram API. The process involves making a POST request with appropriate headers and data, then using jq to filter out the desired information (transcript in this case). Additionally, the author explains how to save the output to a file and create bash scripts for processing multiple audio files. Finally, they showcase some advanced features of jq that can be used to format the extracted transcripts.