There is a limit to what you can and/or need to do before the first AGM and strata committee is elected (which markf the end of the Initial Period to which you will see references)
You should get a professional inspection of the interior of your unit now so that the developer can’t claim wear and tear. But as for common property, that is a much bigger task that must be undertaken by the Owners Corp and I have extracted the section of the Act that deals with that. It’s a bit of a read.