Sven van Caekenberghe wrote a new, extensive, long form, introductory article about Pharo:
A tutorial on Pharo, test and specification based immersive programming
It is a bit different because
– it is based on a non-trivial example
– it uses a backdrop story unrelated to Pharo
– it uses several multimedia elements
– it is published on medium.com which is a general publishing platform
The appendix describes several ways you can get the code. I think building both a Spec and Seaside UI from the same specification as well as reusing functional tests in different contexts is cool. Anyway, I hope you enjoy it.