Glenn O’Brien has been dishing out advice on the finer points of modern masculinity for well over a decade in his GQ column, “The Style Guy,” and he also writes an advice column for Italian Vanity Fair. Thus, while it’s a big task, the author, editor and all-around Renaissance man is at least somewhat qualified to pen a book titled How to Be a Man, out in April (Rizzoli; $24.95).

Tips From How to Be a Man:

• Having sex with women is natural and most of us manage to pull it off eventually. The trick is simply to find ways to have intercourse with women (in the various senses) without giving them undue power or influence over you.

• The girls on Sex and the City sleep with typical hetero men. But socially they prefer the company of gay men. Even the ancient Mayans probably had fag hags. In the interest of evolution, or at least more peaceful relationships, we must learn to be gayer heterosexuals.

• Since the world’s religions have spent the last millennium disgracing themselves, what have we left to believe in but fashion? It is more faith-based than anything else I can think of, and yet it doesn’t contradict science.

• Style is the way Clark Kent took off his glasses. The way Jean Cocteau rolled up the sleeves of his suit jacket when he read Le Monde. The way Louis Armstrong played the cornet with a handkerchief draped over it. The way Michael Jordan wore his shorts. The way Sinatra held a cigarette. Style is in the details, in the nuance.