
Contents of this article
24 Essential Lessons for Investment Success is a true classic of stock market investing. It suits every kind of investor, from newcomers to professionals. The book covers almost everything about stocks: you will learn how to trade as wisely as possible and how to become a successful stock investor.

Who Is the Author of the Book ?
William J. O’Neil was the founder and chairman of Investor’s Business Daily – one of the world’s leading financial publications. He started investing very early, had deep experience in stock investing and was highly successful as a professional analyst. William J. O’Neil created the distinctive CAN SLIM strategy for stock trading, which is still used today.
He was also a highly accomplished author with many well-known works, notably How to Make Money in Stocks, The Successful Investor and 24 Essential Lessons for Investment Success – books that made his name and are highly regarded by investors.
What 24 Essential Lessons for Investment Success – William J. O’Neil Covers
The lessons in this book are distilled from more than forty years of the author’s career. That is why 24 Essential Lessons for Investment Success has appealed so strongly to investors around the world.
Some of the lessons William J. O’Neil covers in the book:
- Stock investing basics: new investors must accept that they will take losses, always cut losses at no more than 8% of the original capital, stay persistent, and learn from their failures.
- The best time to start investing: any time is a good time, and the sooner the better. Choose a reputable broker, avoid margin when you are new, focus on high-quality stocks and steer clear of low-quality penny stocks.
- Successful investing is based on rules, not on momentary emotions: never let emotion creep into your trades, and set your stop-loss point correctly. Study in depth the companies that have grown strongly in the market to find the patterns they share.
- Fundamental or technical analysis – both work: as long as you follow each method’s rules strictly.
- The first fundamental to watch: the two most basic and important factors that determine whether a company is growing well are earnings and sales. Growth of 70% marks an excellent candidate worth investing in.
- Understand a stock through the company that issued it: build industry group rankings and identify clearly which industry groups are leading the market. Then choose the leading company in that industry to invest in.
- The importance of volume and big institutions in the market: in the US, 75% of trading comes from institutions, so they have a huge influence on the stock market. Their buy and sell decisions move stock prices.
- Identify the right time to buy: we can time our buys using technical analysis. In a cup-and-handle pattern, don’t buy at the bottom of the cup even though the price is much lower than at the handle; at the handle the probability of a short-term loss is lower and the chance of a price rise is higher.
- Classic patterns that deliver high returns: besides the cup with handle, the W-shaped double bottom can also be very profitable, as can the flat base. Alongside profitable patterns, there are also patterns that lead to big losses: a sharp run-up with no correction, a reversal pattern without rising volume, or a pattern with an overly wide handle.
- How investors can read stock charts like a professional: most winning stocks form bullish chart patterns, so we should study their history. Promising stocks rise 20% within about 8 weeks of purchase, and if a stock gains 20% in just 4 weeks, you should hold it for longer.

The author also covers many more valuable lessons in the later part of the book. This is all knowledge investors should not miss, especially those new to the market.
Our Thoughts on the Book
24 Essential Lessons for Investment Success is a truly valuable handbook for stock market investors. Besides investing methods, how to buy and sell and useful investing techniques, the author gives readers a great deal of practical advice to help you succeed quickly in this highly competitive market. In short, 24 Essential Lessons for Investment Success is well worth reading. Read it now if you want to be more successful in this market.
Technical Analysis Course – CMT Level 1
Green Chart designed this course specifically for candidates in Vietnam who want to study and prepare for the CMT Level I exam. The program includes 27 sessions of theory, practice questions and mock exams. Students also receive the study materials, question bank and mock exams free of charge to support their exam preparation, and can retake the course for free for life.
See full course details here.
Download the PDF of the book HERE
“Stock Trading For A Living” Course
Green Chart designed this course to build a solid foundation in fundamental analysis & stock valuation (Fundamental Analysis), while showing students how to integrate it effectively into their existing trading system, especially for traders who already use technical analysis (Technical Analysis). The program includes 5 theory sessions and 6 months of hands-on trading guidance in the live market with the instructor.
See full course details here.


