Warren Buffett coined the term moat which represents a competitive advantage that a company can possess over its competitors. Pat Dorsey did a great job explaining what a moat is and categorized it into four categories: Intangible Assets, Switching Costs, Network Effect, and Cost Advantages. Whenever I talk to a potential client or give a seminar on investing, I always talk about moats stemming from four sources that Mr. Dorsey explained. I absolutely loved this book.

- Mariusz Skonieczny, author of Why Are We So Clueless about the Stock Market? Learn how to invest your money, how to pick stocks, and how to make money in the stock market

Think of a strong brand.

Take Tiffany's, explains Dorsey. Remove a Tiffany diamond from the blue box, and it looks no different than one sold by Blue Nile, he explains. Yet, Tiffany's is able to charge more than competitors.

Or take Bayer aspirin, says Dorsey. Bayer can charge almost two times as much as generic aspirin, making it a power brand.

If a company can charge more for the same product just by selling it under a brand, it's likely that you have a wide economic moat and a stock that is worth considering.

These are simple, straightforward lessons any reader can benefit from.

A book that fulfilled my expectations. Put the quality in front of the numbers and gave me specific methodology to look through companies choosing those that are more important to those that are just part of the crowd. I believe that I read through business articles with a different set of glasses and see them through a different prism.