Here are a few tips & a basic recipe for adzuki beans: http://nyc.wholefoodsmarketcooking.com/recipes/10989_basic_adzuki_beans

adzuki or azuki beans are small, ~5mm, red (though there are black, gray, white varieties as well) beans. They are often sweetened and mashed (most times) to make a sweet bean paste for Japanese and other eastern Asian pastries/desserts.