An ENTIRE new world opens up to you with photo editing when you understand curves. As a "visual learner", I found learning curves really easy to understand, as you see Jodi edit images LIVE and she walks you through it step-by-step. As a NON-professional photographer, I found this to be really helpful in working with my photos. If you are a PRO...this is a MUST, but even if you aren't a pro......you will see your images instantly improve by working with curves!