"Rich AF" by Vivian Tu serves as a guide to understanding and adopting the financial mindsets and strategies often employed by wealthier individuals. The author, drawing on her Wall Street background and personal experiences, aims to demystify finance and make it accessible to a broader audience, particularly millennials and Gen Z. Tu challenges conventional frugal advice, instead emphasizing wealth-building through investing, understanding debt as leverage, and maximizing earning potential. The book covers practical topics such as budgeting, saving, investing in various asset classes, navigating credit and debt, and understanding taxes. Ultimately, it encourages readers to take control of their financial lives, negotiate for their worth, and build a secure financial future by adopting "Rich AF" habits.