Early this year, Sascha Corti from Microsoft Switzerland created and made available a great AJAX Hands-On Labs in French and German.
These HOL has been translated in english by Ken Cox.
Moreover Ken also updated the HOL material from AJAX RC to RTM !!
Then Sascha did the same for the French and German versions.
Now you have the choice of languages and full updated content available in Sascha's blog.
Good job guys!