Quinoa is easy to cook. First, rinse it to remove any of the powdery residue (saponins) that may remain on the seeds. (Even if quinoa was rinsed before packaging, I suggest you rinse it again.) Simply wash it with running water a couple of times or soak it in a bowl of water for a couple of hours. Change the water twice.
To cook, use about twice the quantity of water (2 cups of water for 1 cup of quinoa) and simmer on low for about 15 minutes.