How are people conditioned in brave new world?

In Brave New World, people are conditioned by the little boxes that are placed under their pillows while they sleep. These boxes teach them that whatever class they are (Alpha, Beta, Delta, Gamma, or Epsilon) they're glad their that class. They are also taught open sexuality and to want new things (Ending is better than mending) and to love flying. Also, they are conditioned for their environment on the conveyer belt. In the book, we see bottles be conditioned to hate the cold, which implants a need to seek out warmer weather. They also condition toddlers. We see them show toddlers flowers and colorful books, and when the babies get familiar and happy with these items, they shock them and blare loud noises.