Gatsby, a highly recommended technology to learn in 2020, invites developers to participate in the #100DaysOfGatsby challenge, which offers both beginner-friendly and advanced prompts to enhance skills, including building a Gatsby Theme. Challenge 8 focuses on enhancing website accessibility, particularly for forms and images, which are crucial for users relying on assistive technologies. Developers are encouraged to use tools like eslint-plugin-jsx-a11y for linting and to follow WebAIM's advice for accessible forms. The Gatsby community provides support through various platforms, including Twitter, Discord, and Reddit, ensuring participants have resources and help available throughout the challenge.