I've often argued that a programmer who says "I know objects" without having touched one of the "pure object" systems like Smalltalk or Eiffel, doesn't really know "objects". When people would ask "what is smalltalk?", I'd point them at Squeak.
Well Keith Fieldhouse has gone and done the next good thing: he's written an article for OnLAMP about Squeak that gives far more handholding than I've been able to do quickly. Yeay Keith. That one's going into my bookmarks.