Hi
On the immigration website they provide a pdf called 'Australian Citizenship- our common bond' and they tell you which sections they will test you on- you don't need to bother with anything else- the test is really straightforward. What you are more likely to come unstuck with is providing the right documentation as some of the stuff that was acceptable for the visa application appears not to be acceptable for the citizenship application. For example if you need any documents translating from a different language, make sure they are performed by a registered Australian translator, and also your birth certificates need to include the names of your parents now apparently (my old one from the 1970's didn't)