1. Next vs React
2. CSR vs SSR
3. SEO optimisations
4. File based routing (App router)
5. “use client” directive
6. Backend routes in NextJS
7. Data fetching in next
8. async components, server components

Whats left

1. () - Route Groups
2. [] – Dynamic Segment
3. [...] – Catch-All Segment
4. middlewares in next
5. static site generation
6. hydration