How’s your progress going? I read The Memory Book (Harry Lorayne) 20 years ago, and have always been interested, but assumed it would take years to be proficient. Wasn’t until I read Moonwalking With Einstein that I realized that with consistent practice it doesn’t need to take that long.
Life has gotten in the way, so I haven’t been consistent with practice. Have also been procrastinated by jumping between books (Dominic O’Brien, Harry Lorayne, Nelson Dellis, others) trying to compare methods.
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!