As most of the attractions are located within walking distance from each other, it is best to explore Florence on foot. If you're running out of time, you can rent a bike for around €5 per hour or travel around by bus for €1.5 for a single trip.
If you have more time, you can add a visit to the Boboli Gardens or the Pitti Palace. If you have fewer hours, it's ideal to focus on the top locations such as the Duomo, Accademia, and Uffizi gallery. Also, remember to wear comfortable walking shoes and carry a water bottle during summertime. To avoid the crowds and long queues, pre-book your tickets a few days in advance.