To celebrate 'Heritage Day' (Thursday March 14th) at the Australian F1 Grand Prix, free General Admission tickets are available for the first day of the Grand Prix weekend at Albert Park, Melbourne. These tickets can be downloaded and printed or be picked up at the circuit on the day.
While I don't think there's any F1 on-track action on Day 1, this is still a good offer if you're interested in attending the GP while avoiding the packed crowd that are typically seen as the weekend progresses.
Correct, no F1's on the Thursday but still a lot of other things to keep people entertained.