Property Investing – Tax strategy 4 a 27 year old

Hi I am a beginner to the property investment game. I want to know whether I should set up a trust, a company, a super fund etc. I started using an accountant after buying my first property in my own name. I asked him for advice with respect to how i should set myself up for the next 2 properties I purchased. He never told me about trust, company and superfund structures to maximise tax return so the next 2 properties were in my name. I need some advice on how I should go about setting things up for future properties I purchase, or even share investments for that matter.
I would appreciate any advice, but i am really an amateur to the tax system so dont assume I know what your talking about.

Also if you know any good accountants in Adelaide you could pass on, that would be vey much appreciated.
Many thanks!