BeautyInDesign have a great tutorials series for learning Mootools from the beginners level to intermediate. In total five lessons, beginning with introducing Mootools, where you can find resources, documentation and how to download, then second lesson introduce first sample effects to make text bigger. Lesson three introduce to creating Drag-able/Resize-able Window, then you can learn about opacity fades for various windows in lesson four. Finally lesson five show you how to use mootools to create the JoomlaOS application. Tutorials very well explained, that in one hour you could become a mootools expert. Great work Rick and thanks for sharing.