I earned a Business Degree from university and have been working 8+ years in a MNC.
I thought it does not hurt to go back and start re-learn things.
This book has been recommended in many reviews and on many websites. But to be honest: It's overstated.
For those, who have no clue about Business and Finance, it provides a good start. For those, who are proficient will find little additional learning elements. No "wow" effect.