Basically, allow them to mostly dry out when they go dormant, but an occasional light watering in winter. You might want to keep them in a black plastic pot. The black color can warm up earlier in the season. Protect rhizomes from freezing temps.They like to grow in part shade/sun. The variegated ones need more sunlight.
You need to have the bulbs grow to some size so that they can flower the following year.
They're best transported/shipped while dormant.
kevin