[IWantOut] 22F USA -> Australia

Hey! I'm doing my first big solo trip which is moving to Australia on the 462 Working holiday visa and I seriously couldn't be more excited! I'm arriving in Sydney in February and want to travel the east coast for a month before settling down in one city. I was wondering if anyone has any advice regarding logistics with that; any city recommendations, hostel recommendations, should I rent a car to move around? Any help would be greatly appreciated! To give some context about what I'm looking for, I'm 22F definitely looking for a place I can meet lots of people, the beach is an absolute must since I love to surf, good public transport is important and overall would like to be in a major city. Again, any advice would be greatly appreciated!