"An idea that is developed and put into action is more important than an idea that exists only as an idea."
Dr. Edward de Bono
Here are two practical ways that you can apply de Bono thinking.
Go to LateralThinking.com and your computer or smartphone will assist you in applying Lateral Thinking to anything you want to think about. This is a service for generating and developing ideas. It is for people who are already familiar with the Lateral Thinking techniques.
There are also ten Challenges for you to improve your Lateral Thinking skill. No previous knowledge is required to tackle these challenges.