This was a truly excellent set of puzzles, thank you!
Some things I appreciated beyond the more obvious ahas:
- It actually took me a few minutes to grasp the joke of puzzle 0--that I was explicitly told to solve it first back on page 2.
- I actually very much appreciated puzzle 0--its existence, its placement, its clarification of the rules, all of it. It felt like a little "congratulations!" for having figured out most of it before I got to it.
- "A Brief Interlude" being a completely valid puzzle, layout and all.
- A couple of the hidden messages being (partly) in plain sight.
- That you used the name of a cookie that gave such "GIASFCLFEBREHBER" energy when written backwards.