The early visions of MS Excel were capable doing everything from balancing your checkbook to sophisticated data analyses, including multiple regressions and easy-to-create matrix algebra formulations. I used them widely in my peer- reviewed publications on sea level rise and coastal processes. The latest version has those things, but also is cluttered with endless templates and options, and is not at all intuitive. Commands and procedures have changed, and this book (all 800 pages of it) is no real help in using the program. Example: Want to change the color of data points or lines in a chart? Try to find how to do that in this book. The index is no help.
Excel 2019 is clearly designed for the business user who has to prepare PPT presentations, and wants to use canned templates for displays of data and forecasts, etc., in the minimum time possible. But consider this: If a "for Dummies" book is 800 pages, then don't think that this program will be easy to master, or that this book will be any great help.