The DK Eyewitness Travel book for Australia is a decent travel guide, which includes a lot of pictures to help the traveler see what the attraction is while doing their planning. This 2006 revised edition runs over 600 pages, and includes an introductory section as well as 8 sections on the various areas of Australia, including one for Sydney by itself. It also has a section for Travelers' needs, which include accommodations, restaurants, and shopping information, and a section titled "Survival Guide" which contains a lot of useful information for travelers.
While the pictures are quite striking, they do seem to come at a price of more information about each of the attractions as well as the general areas. For my trip, I found the section on Tasmania to be rather sparse. The section on Melbourne was significantly better, but even there it would have been nice to have more information. I also question the practice of grouping all the hotels and restaurants together in a single section for the entire country. It seems as if the traveler would be better served if information of that sort was included in each of the sections rather than all together. They do organize the items by region within those sections, but in a hurry one might not notice if they stray outside of their area.
This is a useful reference, but I think it works best as a supplemental reference along with other material. If one needs a single reference, you should look elsewhere.