The Prompter Guide is a comprehensive resource created by Shane McGeehan for artists and creators interested in mastering MidJourney AI and creating new things. It offers visual examples, insightful blog posts, and a feature-packed prompt design tool. The prompt design tool allows users to generate prompts for AI-generated images, animations, and other creative projects by specifying various parameters like style, lighting, color, and aspect ratios. The guide also provides beginner tips, discord notes, prompting techniques, and detailed explanations of parameters. Additionally, it offers resources for using AI tools alongside popular software like Photoshop for extended creative flexibility. The resource is constantly updated and available for free, making it a valuable tool for artists and creators looking to explore their imaginations and have fun with AI-generated artwork.