Watch a live class being taught all the steps in lesson plan 1. Next learn lesson Plan 1 then watch the live class again to get a feel of how to structure the class.
After your introduction and fire drill you need to go through the explanation of Salsa and its origins. Clap out the timing with your class and get them to clap with you. If they dont understand the beat you will hear this when they clap out of time. This is your chance to rectify the timing before you confuse them by adding feet placement as well.