Understand REST APIs, HTTP methods, and FastAPI fundamentals.

Master URL path parameters and dynamic routing in FastAPI.

Handle URL query strings and optional parameters.

Process POST/PUT data with Pydantic models.

Define and validate API responses with Pydantic.

Use appropriate HTTP status codes in responses.

Secure APIs with JWT, API keys, and OAuth.

Handle errors gracefully and return meaningful responses.

Middleware, background tasks, WebSockets, and advanced features.