Clutter tutorials

For some time I've been planning to look into Clutter more seriously, it looks like a really nice framework to build a UI engine on top of. Today I found the following two articles that gives a decent introduction to how the API works,

This post goes through the basics of Clutter's C API. It covers how to create an initial empty window, how to render simple rectangles (with textures) and finally how to animate and scale them.
http://tuxradar.com/content/clutter-beginners-tutorial

This one mentions on how it's possible to use gjs to create JavaScript bindings which gives you an easier to use development environment (no memory management and other C "features").
http://townx.org/blog/elliot/introduction-sorts-javascript-desktop-application-development-gjs-and-clutter