Before writing code, plan your app. The best developers design first, code second.
We'll build a Task Manager:
users: id, username, email, password_hash, created_at tasks: id, user_id, title, description, status ENUM(pending,done), created_at
POST /api/register → create account POST /api/login → get session/token GET /api/tasks → list my tasks POST /api/tasks → create task PUT /api/tasks/:id → update/complete task DELETE /api/tasks/:id → delete task