I have to say this looks really cool.

Maybe this is a really dumb question, but as someone who really knows nothing about computer graphics, how can you actually run these examples?

I realize that I could Google and research and find a list of "canvas drawing tools" in a variety of languages that I could then evaluate (despite, again, knowing nothing about graphics), but it'd be SUPER-SUPER-awesome to have a quick note "there are lots of ways to go about making these things happen in the real world, but here's one I recommend if you have no other priors." :-)

Really cool book idea, keen to have a go at it!