Rinpoche is giving all Lungs of Anuyoga practices in every teaching (not during WWT though). So, somebody who has followed, at least, one teaching won't miss anything.
From the other hand, lung is not the only thing which is required. Explanation is also necessary for knowing what we are doing during practice.
Then learning of melodies, mudras, music instruments etc.
So, somebody needs either a lot of lonely study through books, CDs, DVDs etc, and/or participation in a live Community with people who already know well the practice.
"My view is as vast as the sky, but my actions are finer than flour"
~ Padmasambhava ~