I read this book about 10 years ago and generally gained a greater appreciation for buying healthy stocks. Make no mistake - this is a momentum strategy. But O'Neil has created a very specific formula and process for his style of momentum investing. I also learned a lot about technical analysis and some of the other elements that affect stock movements (sentiment, market psychology, etc.). And O'Neil spends a good deal of time telling you how to sell a stock, whether at a profit or a loss. I think this is perhaps the hardest part of investing, but after reading this book, you should have no excuse for letting a huge gain slip away or digging a huge hole for yourself. Above all, the book provides dozens of examples to support many of the techniques advocated in the book. One gripe I have is that when it comes to finding certain patterns in charts (head and shoulders, cup with handle, etc.), beauty can be in the eye of the investor - I wasn't always comfortable with what qualified as an acceptable pattern, and, of course, these "iffy" charts all demonstrate money-making stocks AFTER the fact. I also believe that there are other investment approaches that can yield good results, especially in a trending market like we have found ourselves in more recently. But on the whole, this book provides a wealth of information in a concise, well-supported manner. It definitely belongs in your investment library. A bonus is that the newspaper O'Neil founded, Investor's Business Daily, can provide an ongoing educational follow up to the book, so the approach you learn in the book will never become outdated. I read it regularly.