Dive into a comprehensive tutorial on building your first Gatsby theme with Emma Wedekind and Jason Lengstorf. Learn the fundamentals of Gatsby theme authoring, explore essential plugins like gatsby-source-filesystem and gatsby-plugin-mdx, and gain insights into creating a styleguide theme. Follow along as Emma builds her first theme, discussing challenges and best practices throughout the process. Discover valuable resources for further learning, including Egghead.io courses and the Gatsby Theme Jam. Despite initial audio issues, this in-depth session provides a wealth of knowledge for developers looking to expand their Gatsby skills and create reusable themes for their projects.