Here a couple of links in dutch, french and English with info on how to learn Kodu to kids:

In het Nederlands:

http://www.bs-windekind.be/Computerhuisje/Afbeeldingen_downloads/Programmeren%20met%20KODU.pdf

Vidéos

Les1: Basis

https://www.youtube.com/watch?v=NpY6-qIJMUg

Les2: Uitgebreid

https://www.youtube.com/watch?v=qCFxZU-1dqo

Les3: Vijand

https://www.youtube.com/watch?v=ZRF7cgOQHwM

Les4: Padden

https://www.youtube.com/watch?v=qe8pEuvKKEo

Les5 : Race Game

https://www.youtube.com/watch?v=gwQG-BcWZhs

Getting started with Kodu Game Lab

http://www.cs.unb.ca/~wdu/gamecamp/kodu-manual-2010.pdf

Tutorial pdf:

http://resources.hkedcity.net/downloadResource.php?rid=1356004239&pid=1142185599

Videos

Basics :

https://www.youtube.com/watch?v=XXhJ1_ijE7k

Football :

https://www.youtube.com/watch?v=zRZp27K6dUc

Racing Game :

https://www.youtube.com/watch?v=eRJuEm0-vSA

Kodu en français

Installer : http://jdolle.simdif.com/programmation_jeux.html

Initiation :

http://edutechwiki.unige.ch/fr/Kodu

Vidéos

Leçon 1:

https://www.youtube.com/watch?v=xdxztxjJu98

Partie2 :

https://www.youtube.com/watch?v=gfePm7VpK4A

Partie3 :

https://www.youtube.com/watch?v=71GDXPp8Ez4