I usually draw with just my mouse.
Here's my latest oekaki: http://neondragonart.com/oekaki/picture ... rd=default
Just make sure you have an optical mouse. The kind with the rolling ball on the bottom are very difficult to work with, because they interpret everything as horizontal and vertical steps.
I'm not quite sure what sort of a tutorial you are looking for, though.
Many drawing techniques and methods are applicable to either a mouse or a tablet.
Here's the animation, to show how it was drawn. http://neondragonart.com/oekaki/picture ... rd=default
It's accurate, until around halfway through, where it starts stuttering for some reason.
Also, it doesn't show any of the changes in opacity I applied to any of the layers. Those blotchy color layers were mostly transparent.