This is a terribly easy and beautiful design. All you need is a "nail dotter" or a ballpoint pen. You can get a dotter at any Walgreens/CVS/etc. or beauty supply store. If you have a ballpoint pen that is out of ink, it works almost as well.
The dots - drop a bit of polish onto a piece of thick paper or cardboard and dip your dotting tool. The biggest snag I ran into was the pool of polish drying rather quickly. It will start to become goopy and leave unwanted strings after each dot. Just make sure to use a fresh pool after every two nails or so.
I waited at least 15 minutes after the dots were on to apply my top coat. If you apply it too quickly, the design will run and look sloppy.