Rice cookers may seem like fairly simple tools but if you want to get the most out of them, getting a decent rice cooker cookbook is absolutely essential. This is true regardless of whether you have a very simple and inexpensive rice cooker or a much more complex and feature-heavy device.
One of the key reasons for investing in a good cookbook is simply that a rice cooker can do so much more than most people imagine. The most basic example of this is simply the various types of rice. Getting rice perfect is a bit of an art, especially as different types of rice have their own requirements. Likewise, you may want your rice to turn out a particular way or you might want to make more complex dishes that heavily rely on rice, like risottos. But, there is much more to rice cookers than simply making rice.