Book excerpt: "Harmonic Patterns Strategy" is the first volume of the series "Trading with the Trendlines." The book explains a strategy applicable in every market (forex, equities, commodity...), based on a harmonic pattern and trendline. You will see the harmonic patterns from a different perspective. The strategy, in fact, seeks to exploit the completion of a Gartley or Butterfly, trying to ride the last leg. What you are going to read in the book is, therefore, my interpretation of this type of pattern. A way to predict a future movement of a market, and that I have studied after observing many similar situations, and to have identified, under certain conditions, a subsequent trend common to most cases. Easy and clear is the identification of the target profit and stop-loss of the strategy. Not only. Depending on your account, I will also explain to you the correct position sizing, for proper money management. If you are a beginner, do not worry; the first two chapters will provide you with adequate knowledge for understanding the strategy and using it correctly. Do not be tricked by the fact that the book is free. The strategy, if you use it correctly and with money management appropriate to your account, will give you a high percentage of profitable trades. However, it is recommended to combine the strategy with the fundamental analysis and open a position only if both give the same signal.