Almost all towns and cities provide some sort of public transport including buses and taxi cabs therefore getting around in Indonesia is not a challenge.
Details of virtually all varieties of public transport in Indonesia which include airlines, airports in Indonesia, bus routes, driving maps and trains in Indonesia are available at this website.
The tables below can provide more info regarding the transport options to get around Indonesia: Travel by rail, travel by air, and travel by bus and car.
Airports in Indonesia
Public Transport in Indonesia
Indonesian Public Transport Questions