It is not as easy as the subway to navigate since there are more than 100 bus lines and 6 tram lines in the city and you would have to be familiar with the neighborhoods and stops even though there is a screen inside the bus and tram indicating the destination information.
With so much information about bus lines the best is to consult the official website of the metropolitan transport of Barcelona.
The Barcelona bus network reaches all parts of the city, the service is excellent, the buses are new, clean and are adapted for disabled travelers.
The frequency varies depending on the bus line but the average is between 5 to 10 minutes.
The tram (TRAM), is a modern and friendly transport environment. The TRAM consists of two trips, Trambesòs and Trambaix and a total of 6 lines.
There is a free online application with GeoLocator that will indicate you the closest bus stops to where you are and inform you of the schedule.
This application can be downloaded on Android and Iphone.
In this link you will find all the information needed to download these applications.
Bus fares in Barcelona
Valid for a trip by subway and bus.
Price: 2.15 EUR
T10 ticket rate
If you are on vacation in Barcelona, this is the ticket that will come out cheaper to buy, as it can be used by different people.
With this bonus you can make 10 trips to travel alone or accompanied in the subway and in the bus. It is individual.
Price: 9.95 EUR
Click here for more rates: http://www.tmb.cat/es/bitllets-i-tarifes