Learn how to read data from Excel files in REST Assured API testing through this beginner tutorial. Discover techniques for adding Excel Maven libraries, creating functions to read data, and working with both xlsx and xls workbooks. Follow step-by-step instructions to set up Maven dependencies, create and populate Excel files, implement functions for row counting and data retrieval, and utilize constructors for efficient file path and sheet name handling. Gain practical knowledge on accessing cell data, handling numeric values, and adapting to different Excel formats.