Alocasia does best with bright indirect light, but will benefit from some early morning or late day sun indoors (right in front of an eastern or western window), particularly during wintertime. You may need to use a grow light during dark winter months, or move them to a sunnier window during that time.
It prefers to be consistently moist, but not wet and needs to have good drainage. It can't take wet soil, but also doesn't tolerate dry soils well. A well draining soil is necessary and the plant should not be allowed to sit in water. Allow the top inch or so to dry out before watering again.