Begin your tour of Toronto on a GO Transit interregional bus from Lester B. Pearson International Airport [source: GO Transit] heading downtown to Yorkdale or York Mills subway station, where you can easily transfer to other destinations. With three lines and 69 stations, Toronto's subway system serves most areas of the city. To help you get around town, Toronto's Transportation Commission (TTC) publishes a free ride guide about the city's mass transit, featuring information about the city's major attractions, including its popular Harbour Front area and the CN Tower, and how to reach them by subway, bus, ferry and street car [source: Toronto Transit Commission].
Single tokens and tickets can be purchased at subway stations and at some convenience stores, but one of Toronto's best deals is the all-day unlimited pass. It allows you 24 hours of unlimited mass transit rides. Special weekend and holiday passes are also available, as are packs of discounted tokens and a 30-day Metropass -- a prepaid card offering a month of unlimited rides on public transportation.