3x3 — Blindfolded
M2 for edges, Old Pochmann for corners, Speffz letters.
How a commutator works
From the notes you pasted. They started part-way through, so the first paragraph and the picture strip are written here. The cycles, the table and all seven exercises were checked in the cube simulator; one explanation (exercise 7) is corrected, and says so. Your letter code has no D letter yet, so these have no mnemonic words.