The single flammed mill is an interesting rudiment that incorporates the flam stroke with a paradiddle-like foundation. It's a little less popular than some of the other rudiments, but it's definately something you should practice.
Here is what it looks like when written out in standard drum notation:
As you can see, aside from the flam strokes, the sticking is simply an off-set single paradiddle pattern. If you can already play the single paradiddle, it's just a matter of starting on the right-handed double, and adding in the flam strokes. Focus on getting the pattern correct, and then eventually build speed.
Here is a unique tom-tom drum beat that incorporates the single flammed mill:
Exercise three is a simple drum fill that makes use of the single flammed mill around the toms:
Once you have the single flammed mill perfected, you can move on to the flam paradiddle.
Learn how to play all 40 drum rudiments with the Drumming System by Mike Michalkow!