I'm a 20 year old Australian and I plan to go to for a trip to New York next year and because I don't know anyone there, what are the best ways I can find acquaintances so that I can do activities (especially going to restaurants and maybe nightclubs) with? Ideally, I would like to get into contact with people first before I go there, so that I have something planned and to look forward to, without the risk of arriving there feeling 'stuck'. Also, would sites such as Craigslist, Gumtree, etc. be a safe option or not?