Dr. Wayne Winston
Dr. Wayne Winston is a Professor Emeritus of Decision Sciences at the Kelley School of Business at Indiana University. He holds a B.S. in Mathematics from M.I.T. and a PhD in operations research from Yale. He won more than 40 teaching awards at Indiana University.

He has written more than a dozen books including "Marketing Analytics", "Data Analysis and Decision Making", "Operations Research", "Practical Management Science", "Office 365 Data Analysis and Business Modeling", and "Mathletics."

Dr. Winston has taught classes and consulted for many leading global organizations. He is also a two-time Jeopardy! champion and has consulted for the NBA’s Dallas Mavericks and New York Knicks.
Mark Cuban sharing his experience with Dr. Winston

Mark Cuban was Dr. Winston’s student and after seeing Dr. Winston on Jeopardy!, he hired him to do player analytics for the Dallas Mavericks, leading them to be NBA Champions in 2011.

Trusted by the most data driven companies worldwide
If you want to become an Excel guru, then you should learn from the only person that Microsoft entrusts to author the intermediate and advanced Excel books.
Microsoft asked him to write their book

He has taught or consulted on using Excel to improve decision-making at Microsoft, Cisco, Morgan Stanley, Pfizer, Verizon, the U.S. Navy, U.S. Army, and many other organizations.

He has authored 25 research articles and the spreadsheet modeling coursework for Harvard Business School.
Other books by Dr. Winston