Yay! Watch this video
first for a great crash course.
It's pretty simple. Start by snapping the small seed insert into the inner (perforated bottom) cup of the sprouter. Put 1/4 cup of the seed mix into the inner cup, rinse the seed well to remove any dust, then drop the inner cup all the way down into the solid outer cup and fill about halfway with water to soak for 12-ish hours. Once that 12 hour soak is done, you begin a cycle of rinsing and draining every 12 hours. I am in the habit of doing it in the morning when I'm making my coffee, and again at some point before I go to bed, times don't need to be exact. Pull the inner cup out and rinse the seeds well, move everything around, and drain very very well. Replace the inner cup into the outer cup, but this time use the elevated position for the inner cup. Set them on the kitchen counter - they don't need sunlight. 12 hours later, repeat the rinse and drain, and again in the elevated position. Usually I have a big batch of amazing sprouts in just a few days.
Once sprouted, I put them into a baggie that I only zip half closed, and store them in the fridge. A batch is enough for all my birds for a week or so, and once they run out, my new batch is done.