Michael Lewis has been on a media blitz this week, promoting the release of his new book “Boomerang: Travels in the New Third World.”

The book, and Lewis’s ensuing press tour, offer a crash course on understanding the European economic crisis.

Lewis, author of “Liar’s Poker,” “Moneyball” and “The Big Short,” toured Greece, Germany, Ireland, Iceland and California for a series of articles in Vanity Fair, which formed the basis of “Boomerang.” The book explores how cheap credit allowed governments to borrow and spend money they had no ability to repay.

On “The Daily Show” Tuesday, Lewis discussed Germany’s role in bailing out Greece and how to succeed as a Greek tax collector.

On “Charlie Rose” Monday, Lewis gave a perspective on the current economic outlook and the “Occupy: Wall Street” movement.

And on “Fresh Air,” Lewis discussed Kyle Bass, a hedge fund manager who has bet against European governments and how Wall Street failed to learn the lessons of “Moneyball.”