Build My First Online Learning Platform

Help me build my first online learning platform as a beginner using Next.js, TypeScript and Tailwind CSS. Model the learning journey as Course → Modules → Lessons → Quiz → Completion.

Students can register, enroll, study lessons, track progress, complete quizzes, save courses and ask an AI tutor questions. Include instructor-friendly course content structures, validation, authorization, progress persistence, quiz scoring, accessibility, responsive design, loading/error/empty states and a clear distinction between tutor guidance and authoritative course content. Add SEO and deployment instructions. Use Next.js with TypeScript and Tailwind CSS. Build a polished, accessible, responsive application with clear beginner explanations, reusable components, semantic HTML, loading/error/empty states, form validation, SEO metadata, dark/light mode and deployment instructions. Explain important decisions as you go.