It all depends. That means I learned some foreign languages in school but never managed fluency. I envy multilingual people. In 2001, we debuted a Lower East Side tour. Generally, Brownstone Brooklyn neighborhood civic organizations like the Park Slope Civic Council and the Brooklyn Heights Association offer house tours in the spring.
Some tour guides have deeper knowledge of specific topics.
But my tours are unique because they combine multiple elements, at a healthy fast pace. Plus, I'm entertaining. And remember, nobody knows everything about New York. This is currently the work of one person, Norman Oder, with the advice and input of some friends. Well, we have branched out beyond Brooklyn tours to Manhattan's Lower East Side.