So you're thinking about taking Challenge lessons. You will find Challenge square dancing to be intellectually challenging and stimulating. It can be done and done well. And it is fun to dance at the Challenge levels.
The Once Removed concept is one of the hardest and least understood concepts in Challenge square dancing.
This paper provides an explanation of this concept for most of us. This will be done by showing sample calls with some discussions of the nuances of the examples including discussion of the strategy to be used for the call.
When we were introduced to BASIC level square dancing, we were presented with a list of the "10 Basic Rules of Square Dancing Etiquette" which included items like "Always use a deodorant" and "Don't drink before attending a dance."
After many years of dancing, we have additional items to add to the list, based on observations of behavior that is questionable.