The first step is choosing your bulb variety. Amaryllis comes in hues of red and white, but if you can't choose just one try out Eden Brothers' Holiday Amaryllis Bulb Mix or the Exotic Amaryllis Bulb. Just as the name suggests, paperwhites offer gorgeous white blooms, some featuring faint hues of yellow like Eden Brothers' Erlicheer Paperwhite Narcissus Bulbs.
Choose a clay, plastic, or resin pot at least six inches deep with drainage holes and a saucer to catch water underneath. Be careful not to choose a pot that is too lightweight, as the blooms of the bulb could cause it to tip over as they develop. Fill your pot with soil and place the bulb flat-side down so that soil covers about 1/3 of the bottom of the bulb. If using stones instead of soil, place bulb(s) on top and fill container with water, about 1/3 below rock line. While amaryllis prefers to have its own pot (one bulb per pot), paperwhites only need a few inches to grow, and three to four may be planted in one pot together depending on the container size.
Place your indoor bulbs in a bright area with indrect light and water sparingly until the plant starts to develop. Once your stalk is established, water regularly. As blooms appear, turn your plant periodically to encourage flower stalks to grow upright and straight.
Once the blooms from your amaryllis plant fade, it will begin storing energy for next year's bloom. Move your plant to a sunny location and maintain a consistent watering and fertilizing schedule. After your zone's final frost, move the plant outdoors to a sunny lcoation. If you're hoping for a winter holiday re-bloom, bring your amaryllis plant back indoors by the middle of August, placing it in a cool location (about 50 to 60°F) and cease watering. Once the leaves die, move it to a dark place for a rest period. You may choose to remove the bulb from its soil (or stones) before storing. Once your plant produces a new flower stalk, move the plant once more to a warmer location for about three weeks. Repot the bulb in fresh soil and place it in a sunny location. Repeat this process year after year for annual amaryllis blooms!
For more information about planting, growing, and caring for indoor planted bulbs, see the Amaryllis Bulbs Planting Guide or the Paperwhite Bulbs Planting Guide.