Harmonic patterns are price action patterns based on Fibonacci ratios. Typically traders look to enter at the C or D point of the pattern. I often look for multiple harmonic patterns to come together in confluence, sharing the same D point. I also look for well defined structure with clear support and resistance levels. Trading these patterns without taking they overall structure into account results in more losses and weaker moves. I learned everything I know about harmonics and structure from researching online and free resources.