Mike this is a well thought out series of lessons, clearly presented. I think you missed your calling your a natural teacher. I couldn't have done it without bogging myself down with ' insider tips here there and everywhere'.
One suggestion about cutting with a circular saw over uneven surfaces, it could be worth while making a sled for the saw to run on for an even pass, no pivoting in all directions when cutting and less chance of kick back or flying offcuts.
I don't know if you've ever heard of Paul Sellers, he does more advanced joinery with hand tools but has some very good tips on sharpening and making basic woodworking tools. It could be interesting for your followers.