You should first rinse off the rice and then after rinsing put the rice in a bowl filled with water. Let the rice soak for a good 20 minutes and then the rice is good for cooking. The way you cook the rice varies from recipe to recipe. But if you're just looking to cook the rice on it's own. As it's soaking in a pot you can put it on the stove and let it cook for around 10 minutes. It depends on the size of the rice.