You have 4 main ways to travel in the city:
1. Metro (Subway or Underground): www.tmb.net
2. Barcelona Taxis: Tel. +34 93 225 0000, Tel. +34 93 490 22 22 Tel. +34 93 330 0804 Tel. +34 93 212 2222, Tel. +34 93 358 1111 Tel. +34 93 300 38 11
3. Barcelona Buses: www.tmb.net
4. Walking!
Metro And Bus Ticket: You can buy tickets for individual journeys for the metro at 1.30 € per ticket. But if you are here for more than one day or intend taking more than 5 journeys on the Barcelona metro or buses it's best to buy the T10 ticket.