Your feet will get you to the bakery. For the beach at Copacabana or the town centre, you'll want the bus or the metro:

Portuguese	English
o ônibus	the bus (same in the plural: os ônibus)
o metrô	the metro
a estação	the station
o ponto (de ônibus)	the bus stop
o carro	the car
a bicicleta	the bike
o cartão	the card

Say it right: ônibus is stressed on the first syllable — “OH-nee-boos” — and metrô on the last.