The main tourist information center in Adelaide offers maps and travel advice. It's located at:

South Australian Visitor and Travel Centre

There is also an information booth on the corner of Rundle Mall & King William Street. Or, stop any of the Adelaide City Guides, dressed in green, who wander the city center around Rundle Mall.

South Australia - A Brilliant Blend - 12 Regions of SA

Welcome to Adelaide

Here is the link for easy access to the other states and cities 'Inside Pages':

Inside Australia : Tourist Board Info