The latest sky-scraping new residential tower under construction and how may zillions of dollars people will pay to live there are frequent, favorite topics on this site. But consider the opposite of that: squatting. That topic, and how to do it right, was the subject of a talk last night at the East Village's Museum of Reclaimed Urban Space, or MoRUS. Appropriately enough, the museum itself is a reclaimed urban space. About two decades ago, the building was left to rot first by its owner and then by the city. There was no roof and there were no stairs. But squatters took over the space, fixed the stairs, rebuilt the roof, and brought the building up to fire code. Now, the museum, which opened in December of 2013, occupies the first floor and basement and a collective lives in the apartments above. From the street, it looks like an ordinary building, but it's actually called C-Squat. It serves as an example to wannabe squatters; now, onto the practical advice.