This weekend I wrote A Romp Through Infinity which explains the Inf features of Perl 6, but drills down each example to reach the most fundamental language features, which it then explains.
It should be interesting to those just taking the plunge to Perl 6 because so many features are present in the smallest code fragment. I'm hoping this concept will make it less obscure. I'm experimenting with literary style too: since it's stream of consciousness, I'm using standouts in the text rather than breakheads, so you can still find something again when skimming but not introduce artificial organization.
For experts, look at the final section where I point out things in the ongoing design that need work. These examples identify things missing from the Synopses, etc.
Please let me know if you see any coding errors, and of course any feedback is welcome.