1. Metro: The Porto Metro is the most convenient and reliable way to navigate the city. It covers most major attractions and offers frequent services.

2. Tram: The historic Tram 1 takes you along the scenic route from Infante to Passeio Alegre, passing through the picturesque Ribeira district. It's a must-do experience for tourists.

3. Bus: Porto has an extensive bus network that covers the entire city and its outskirts. It's an affordable option with various routes to explore different areas.

4. Walking: Porto's compact size and charming streets make it ideal for exploring on foot. Most attractions are within walking distance, allowing you to soak in the city's atmosphere.

5. Taxis: Taxis are readily available in Porto and offer a convenient mode of transportation, especially for shorter journeys or when you have heavy luggage.

6. Bike Rental: Porto offers bike-sharing services, allowing you to rent bicycles for a few hours or a full day. Exploring the city on two wheels is an eco-friendly and enjoyable option.

7. Uber or Bolt: Ride-hailing services like Uber and Bolt operate in Porto, providing a reliable alternative to traditional taxis. They are especially useful for longer trips or when traveling in groups.

8. Ferries: Ferries are a unique way to travel across the Douro River and venture to nearby towns like Gaia. Enjoy scenic views and explore the region from a different perspective.

Remember to check the specific schedules, fares, and any travel restrictions or updates before using any mode of transport. Enjoy your time in Porto!