Dubrovnik has an inexpensive and convienient public bus system for those who do not want to walk or take a taxi to get around town.  Libertas Dubrovnik's website for the bus system is not in English however there are some subtexts translated in English so that if you do not read or understand Croatian, you can at least obtain a general understanding. If further information is needed re: bus schedules, fares, and routes you can send an email to the Dubrovnik Touist Board at  tzgd@du.tel.hr , or get the information at most hotels located in the city.  Taxis are available at most bus stations as well.