I just plant the bulbs outside in the ground, in a sunny spot, separating the babies from the large ones, and the mature ones usually bloom in the early summer every year. I dig them out in the autumn, remove the dirt and toss them into a bag and shove them in a corner until it is warm enough to plant them out once more.
I started with one, long ago, gave some away every year after a while, and, a few years ago, had about twenty-five or thirty mature bulbs (they made a very nice show) but I gave all but one away...so, I am starting over again.