Help

Hi, I just got into biker's world, I getting my license and everything in NYC. I have a couple of questions, since in the only member in my family that has this interest. What bike should I start with? I like cruisers a lot. Also any recommendations for buying a motorcycle? Because I'm planning to buy a pre-owned or used motorcycle? How can I know if something is off with the motorcycle? Also any website to look for motorcycles? I can't use Facebook's marketplace due to my account was permanently banned so I can't access, any orientation you can give?