I’ve updated my “getting started” page to give links to demos that I’ve checked definitely work with the latest Minefield: http://learningwebgl.com/blog/?p=11#examples. (I’ve kept a list of older ones that no longer work, but with a note saying that they don’t.)
I think most people do rely on Minefield, but I’m a bit surprised nothing’s working for you with Chrome. I just checked with the dev channel version (currently version 184.108.40.206), and all of the links on my updated getting started page worked apart from Cube Defense (though there was no audio on the musical solar system). All of the lessons worked too.
Did you install Chrome using one of the methods on my “getting started” page, or from somewhere else?