I consulted both this book and Paul Vincent Spade’s online class notes while reading Sartre’s Being and Nothingness. Of the two, I think Spade was more helpful, but I think that was just a matter of style (Spade’s notes were in prose form rather than, say, point form, and it includes all the repetition and ‘remembers this’ or ‘recall that’ that goes with attending a lecture--that’s very helpful to me). Nevertheless, Catalano’s work made Sartre all the more accessible to me.