I really like to out with my friends, I don't have a specif place that I prefer. BBQ's, pubs, walk around the city, go to the beach, go to a good restaurant, concerts, festivals, everything is amazing if you're with a good company.
Sydney has a lot of things to do and a lot of places to go. This is my fourth month here, and I know that I didn't visit a lot of places yet, but in my holiday I must visit everywhere in Sydney and around Australia as well.
One of the good places that I went in Sydney was the zoo in Darling Habour, it was really nice, a little bit tourist. I bought a tickets to zoo, aquarium and sydney tower (students has a good discount =D), but I just went to the zoo.. I have to go to the aquarium and sydney tower.
I liked to go to bondi beach, bronte beach and manly is amazing. I think would be better when the summer start, but anyway.. go to Manly is one thing that everybody should do when come to Sydney. You take a ferry, and you have a great view of Opera House, is a good journey.
When the summer start I'm going to learn surf, I'm not afraid about the Australia is the country that has a lot of shark, if someone knows about a good surf teacher just let me know ;)
If want to visit good places in Australia you have a lot of option!

XoXo