What is the book, Rich Dad Poor Dad is about?

I've been hearing about that book a lot lately. What is it about exactly? Is it about getting a career at home by making a lot of money? Is it about no more financial worries? Becoming a millionaire? Making a fast income? Or teaching yourself and others how to make success out there in the world? Is it a new legit career that you can do from home? Or just preparing yourself to be successful as a business person? So, should I get the book? Is it worthy enough for me to read? I would like to know about it a little before I decide to buy it. Thanks,