Because I am learning Russian using a variety of others’ materials, I need a bit of structure because teachers sometimes lack sufficient organizational skills. As a workaround for what feels like chaos, I came up with this scheme:
This gives me a starting point for organizing related content.
Since initially writing this post, I have subsequently found another teacher who is more organized and steady, and who emphasizes practice and clean pronunciation, and who does not rush me through seemingly unrelated material.
Also, I no longer have the need for any of this workaround structure as a learner. That said, I can see value in using it myself as a teacher to create learning material.