I bought some fresh mottled beans from the market to make a stew. I saved some and dropped them in my compost bin. Now there is a bunch of them sprouting in the bin. If you're a beginner, you should try growing beans because they'll normally germinate given the right conditions. Well, unless they are too old.
The only problem I've encountered so far was having them gobbled up by snails. To overcome this problem, I soak the beans overnight, until they're just about to sprout, before putting them into the soil. They will germinate very quickly after that. I guess planting them in a tall compost bin helps too because it's a long climb for the snails. As you know, snails come out to play at night. By the time they get to the top of the bin, it's almost daybreak and they have to make their way back to hide in the shade again.