There are all the usual online student "study guides" that students often use to avoid actual reading, like Book Rags, Spark Notes, eNotes, and Pink Monkey.
Some students at the Englisch Grundkurs of HHG Munich have put together a website on the play and the author. Does anyone else think it's just about impossible to read because of the loud background?
George Bernard Shaw, or GBS, was a larger-than-life figure and personality who argued passionately but with a sense of humor on just about every topic you can think of to argue about: politics, war, the battle of the sexes, socialism, communism, vegetarianism, and on and on. As you can see from the picture, he looked in later life like a cross between Santa Claus and an overgrown leprechaun. There are many short biographies of George Bernard Shaw on the internet. I like the one at Books & Writers.
More of Shaw in his own voice: Selections from interviews done by the British Broadcasting Company, including talks to students. He covers such topics as "The Trick to Passing Exams," "The Hardest Part of Schooling," and "Coping With Life After School". I highly recommend listening to these little (1-4 minute) segments for their humor and wisdom.
Shaw was involved in many causes and espoused many ideas. One example, and not a minor one, is that he was a vegetarian. Here is a collection of his thoughts and ideas on the topic, from the International Vegetarian Union.
Class Handouts: