How can I successfully grow avocado from seed indoors?

To successfully grow an avocado from seed indoors, follow these steps:

1. Remove the seed from a ripe avocado and clean it.
2. Insert toothpicks into the seed and suspend it in a glass of water, with the bottom half submerged.
3. Place the glass in a warm, sunny spot and change the water every few days.
4. Once roots and a stem emerge, transplant the seed into a pot with well-draining soil.
5. Water the plant regularly and provide plenty of sunlight. Avocado plants thrive in warm, humid conditions.