Don't know about tools per se. The guy is a talk show radio host who has a pretty good record of getting through to people's bullshit. That might not sound like much but how many times do you see an interview and you're waiting for the follow up question to the one the interviewee just avoided.
Anyway, the book is him writing about dealing with callers he talks to every day on different subjects from Brexit, to the favourite buzzword of morons "politically correct" and so on. I'm really enjoying it any road.
here's one he did with Rees-Mogg