Some notes and forum posts from my teaching of QP2 at EPFL. These cover the topics of tensor products, the Born rule, the Bloch sphere, density matrices, reduced states, coherence vs purity, the spectral theorem, basis representations, the variational principle, and some linear algebra. I've collated those containing an explanation I may wish to later refer back to, or some equivalence I wish to remember, or evidence of a zeal for teaching which might motivate an eventual escape from corporate America.