Why's Tutorial on irb is available. It starts out, as usual, with a little comic:
There once was a tiger who wore a vestAll computer books should start out this way. ;-)but that wasn't his biggest problem
Because the earth was going to CRASH INTO THE SUN!!!
...
Now, we'll get back to the story of
The Tiger's Vest
in a moment. First, let's install Ruby...
But don't forget, the Earth is seconds away from a sun crash.
