Soaking and sprouting beans can improve the nutritional value of beans, so it is worth the time and effort to do it. However, the technique can vary based on the season. An overnight soak might be sufficient in warmer months to encourage beans to sprout, but in cooler months it might take a two-step process and a few days longer.
When the beans have sprouted and are ready to cook, you may want to soak them again, overnight, in a salty brine. Then rinse them well before cooking. The salty brine will impart a nice flavor, but will not prevent the beans from softening, as is the case if you salt the water in which the beans are cooked.