Progress is going ok - I have a good understanding of the techniques and have started to apply them. A goal is to commit main points from books and concept-schemas I make to memory. Something that's more of a "side project" is using PAO (with a variation on the Dominic system) to memorize numbers. The overhead in making PAOs for 100 numbers is going very slowly. https://artofmemory.com/blog/pao-system/
I'll check out some of those other resources - thanks for sharing!
