The functional endonasal sinus surgery makes great strides. In the meantime learning the surgical techniques can be difficult. A learning curve describes the evolution in mastering the surgical steps by the analysis of the number of complications. This means that each learning step presents specific risks. An interactive training system with multimedia technology has been developed to diminish the complication rate. This system is presented briefly. In our view it allows an improvement of the training of ENT surgeons. It permits the visualized reproduction of difficult surgical steps as a base to master then. We propose a plan for progressive learning including this technology.