Set the bulb in a pot containing good quality compost  so that the top two-thirds are exposed. Water the compost only when the surface is dry; too much just after potting can cause the bulb to rot. Keep the plant  in a bright spot avoiding direct sun, and rotate the plant periodically to  avoid the emerging flower stalk leaning towards the light. Leaves will appear  shortly after flowering.
Once flowering has finished, cut off the flower stalk 5-10cm above the bulb -  don't cut off the foliage. Water when the surface of the compost is dry and  feed fortnightly with a balanced liquid fertiliser. Reduce and cease watering  from early autumn and move to a dry, dark spot for a few months allowing the  foliage to die back, simulating the dormant, dry season of the plant’s native  South America. In November bring it back into the light and begin watering  again. Old foliage should be removed, though take care not to remove any new  shoots. Expect flowers in six to eight weeks.
Please note that newly planted bulbs, using the technique described above, can  take up to eight weeks to flower so plant or purchase as gifts in mid- to late October for flowering at Christmas. Bulbs purchased as gifts for Christmas are likely to flower from early February onwards.