If you plan to visit Melbourne for the first time, there is no end of online help for you. I expect the same goes for most big cities and Melbourne is a big city by any standards, with a population of over four million people.
But not everyone is a tech type. Some like the personal touch and communication with real people. Melbourne serves its visitors well enough in this area too.
Melbourne Visitor Centre. There is no end of information there and you can also make bookings. Two of our building's residents are volunteers at the centre.