I just started creating a Gideros Tutorial series on my YouTube channel. So far I only have only one video (creating text and the basics of variables) but I hope to cover everything up to making a flappy bird clone. Next I will create a downloading and installing video, where I will show how to download Gideros (and the android player) and I will talk about what you can create with Gideros, and how awesome it is that it supports so many platforms.
Here is the link to the first video in the series:
(the rest of my videos have nothing to do with Gideros).