Citi Bike is the bike share program in NYC. I love it.
Bold statement: Even if you already have a bike, you should get a membership to Citi Bike. It is so much fun, safe, the bikes are very solid, and if you’re using ride share or taxi for short rides, this is much better exercise.
Pro Tip: The app “Bike NYC” is way better than the official Citi Bike app for seeing docks near you, available bikes, etc.