@Clint: Yes. I already found those videos. But there is a thing i want to ask, not sure if this is a right place or not, but i will give it a try. Well, right now im not able to have/work with WP8, but only WP7. So, my question/s is/are: If i learn WP7 development now, will it affect my later move onto Windows Phone 8? The thing is, i dont want to wait until i can work with WP8, i would like to start with WP7 tomorrow already...Is WP7 development "old" to learn?