This tutorial demonstrates how to add punctuation, casing, and formatting to automatically-generated transcripts using the AssemblyAI JavaScript SDK. The process involves setting up an environment with Node.js, installing the AssemblyAI SDK, obtaining an API key, transcribing audio files with specific options (e.g., punctuate: true, format_text: true), and printing the filtered text. Additional configuration options and information about transcript objects are available in the AssemblyAI docs.