Long Island
Long Island is, as the name implies, a long island. It extends east from Manhattan into the Atlantic. The western-most quarter of the island is made up of the boroughs of Brooklyn and Queens, though when referring to Long Island, most people are referring to the outermost two counties: Nassau and Suffolk (aka the suburbs).
Basically, only go there if you're going to visit family (if your family is from there, we're sorry), or, if you're wealthy, to sun yourself in the Hamptons. Long Island has a tiny wine country you could visit, for some reason, on the part of the island that hasn't been completely overtaken by tract housing. Don't. It's not really worth it. And don't ever stay too long.