At any outdoors store you should be able to buy a set of maps from the NY NJ Trail conference. These are great maps of all the places to hike around NYC. Harriman is the best.
I think, that for New York you don't need this map because you should just enjoy walking around the city. Nowadays, you can google it. I know that there are such services where you can download tourist routes of any kind. In general, the Internet offers many opportunities. For example, you can help students write assignments at https://essayontime.com.au/assignment-writing-services and make money. No matter where you are from. Professional writers will help any student from anywhere in the world.