1. Validation Overview
2. Adding Validation to Routes
3. Route Validation Exercise & Solution
4. Get Product Handlers
5. Create & Update Product Handlers
6. Applying Product Route Handlers
7. Update Handlers Exercise & Solution
8. Create & Delete Handlers Solution
9. Debugging Routes
10. Creating Error Handlers
11. Async Error Handlers
12. Error Handlers Exercise & Solution
13. Handling Errors with process.on()