I wanted to share a document for anyone beginning learning how to program subtractive synths. The document was made for a summer course on sound design that I taught last year for high schoolers. I made the document after reading Gordon Reid's Synth Secrets, which is another very useful (but difficult) resource for learning subtractive synthesis. The document walks through making flute, brass, string, piano, and percussion patches on a Sequential Prophet 6, but it should be useful for any analog synth that has at least two oscillators.
Hope someone finds this useful!