Since I haven't read this book directly, it's hard to be very specific. But from the title, we can expect that the stories about the antisocial man could be about his isolation from society. He might be constantly at odds with social norms. As for the other strange stories, they could cover a wide range of topics like strange coincidences that happen to people who are on the fringes of society, or perhaps the stories could be about how society reacts to those who are different, like the antisocial man.
I'm not entirely sure about the exact stories in 'the antisocial man and other strange stories'. However, it could have stories that explore the psychological aspects of being antisocial. For example, a story might show how the antisocial man views relationships, perhaps seeing them as more of a burden than a positive thing. And other strange stories might involve supernatural or very odd events that somehow connect to the theme of antisocial behavior.