However you can't manipulate these objects unless you close the SD file link, thus removing the animation, so plan ahead. Now it is time to make some fluids. Click on the fluid panel and choose circle. This creates a circle emitter in the center of your scene. Set the density to 2000.
Density controls how close the particles are to each other when they are created.
When things are lined up click the Daemons panel and click on gravity. Let this run for a moment and watch what is happening. Click BUZZ again to stop the simulation. Time to explain a couple of more things. The BUZZ button runs the particle simulation.