I've read Millionaire Teacher - The Nine Rules of Wealth You Should Have Learned in School, as well as many other investment books. I'm not an investment guru, by any means, but I have come to the belief that the passive investment philosophy expressed in Millionaire Teacher is best for probably 80 to 90% of the population. Other books along the same lines:
The Coffeehouse Investor: How to Build Wealth, Ignore Wall Street, and Get On with Your Life by Bill Schultheis
How a Second Grader Beats Wall Street: Golden Rules Any Investor Can Learn
by Allan S. Roth
A low cost, diversified portfolio of index mutual funds or etfs will generally beat 83.4% of actively managed funds over a 15 year time period.
Source:
https://assetbuilder.com/knowledge-c...onkey-solution
"A portfolio of three index funds beat 83.4 percent of the active-manager fund portfolios over the 15 years from 1998-2012. Equally important, when the active-manager fund portfolio lost, its median underperformance was more than twice as large as the gain in the minority of times a actively managed portfolio beat the index In other words, the upside was smaller, and the downside was bigger, if you tried active investing."