to use demos:
$ npm install
$ cd demos
$ cd 00-ast
$ npm start # opens a browser; click to progress
$ # all other demo folders just contain "command.sh"
# which assumes `node_modules/.bin` is on $PATH
to read (most) of the talk, see talk/NN.txt
. or maybe you TL;DR
otherwise, the slides are available on speakerdeck.