The book is called "Finance Interview Basic Finance Concepts for Investment Banking, Private Equity, and Other Finance Roles" and is a comprehensive guide for those preparing for interviews in finance-related roles. It covers key concepts such as financial statements, valuation analysis, and cashflows, as well as more advanced topics such as capital structure considerations and advanced finance concepts. Overall, the book provides a strong foundation in finance concepts and is an essential resource for anyone looking to break into the competitive world of investment banking or private equity.