I use my rice cooker almost every day. You can make many things in it.
Rice: Rinse the rice 3 times, and add rice with a 1:1 ratio of water. For brown rice, I do about 1.25 water to rice.
Put the lid on and turn it on.
When the rice is almost done cooking, add some sliced carrots (or other vegetables) to the steamer basket. After 10 minutes, you can add some fish. I take a hunk of salmon, or whitefish, and rinse it. Just sprinkle a little salt, lemon juice and shredded ginger over it. I make a little "bowl" out of allmuinum foil and place it in there, then I move the vegetables aside and stick the fish in the steamer basket, put the lid on and steam for another 10minutes. Salmon this way comes out tender as butter.
I also use my rice cooker similiar to a crock pot. Depending on the settings, you can make beans and soup. I put the beans in (unsoaked) and turn the cooker to the highest setting so the beans come to a boil, for about 30 minutes (while I am getting ready for work in the morning.) then, I turn the cooker to the soup setting (a low simmer) and let the beans cook all day when I am at work. Just make sure there is plenty of water in the pot.
For soups, you can add any combo of vegetables, water, salt and any meat/fish (cubes of chicken work well) Throw it all in the pot, put the lid on and I take the dog for a walk for an hour, and come home to a big pot of homemade soup. I often make vegetable and seafood soup this way, so if I am adding softer vegetables like cabbage, I don't add them in until the last 10 minutes of cooking. The same with shrimp or clams.
First, measure out the amount of rice you want to use and put it into the rice cooker bowl. Wash the rice to remove any dirt or residue from the manufacturer's processing (give it a few rinsings), then drain any excess water. Add water using an approximate 1:1 ratio with the rice you plan to cook (you'll probably have to adjust the amount of water, depending on the type of rice and the consistency you want to achieve). Place the bowl back into the rice cooker, put the lid on it, start the rice cooker, and come back when it's done. There's no need to open the cooker to see how the rice is cooking.