"What about a blog updated on a weekly basis covering the basic idea and content of the lessons with maybe a few videos thrown in.
Explain why we are doing things, how the warm up exercises translate to actual jiu jitsu movement, what are the key points of the drills we are doing.
Share anything else I find on the web that relates too.
Could also cover seminars and trips to other gyms.
Would maybe help people remember stuff.
Would take a bit of work but maybe I could do it"