Search for information with an online database such as Google or Yahoo. Use keywords like "electric helicopter" or "RC helicopter."
Visit your local library or bookstore to find books that are pertinent to electric helicopters. Not only will you be able to check out or purchase books that will help you understand RC aircrafts, but you will have the ability to find books that are specific to the type of electric helicopter you would like to learn more about. Bookstores such as Barnes and Noble and Borders have an online database that will allow you to search for electric helicopter books that might not be available in stores.
Find a local community group that is centered on RC aircrafts. You may be able to find information on local clubs and organizations through your city hall.
Subscribe to a magazine that is centered on RC aircrafts. A well-known publication is RC Heli.
Purchase an electric helicopter and read the manual before you begin to use it. When you begin to use it, do it as instructed, especially if it is the first RC aircraft you have used. Try new things with your aircraft to see what different tricks it can do.