I have found out Hoffman Academy lately where we can learn how to play piano online for free. Though there are also premium membership where we need to pay annually, or we can purchase the units separately, we can still enjoy the learning videos online for free. I like the way Mr. Hoffman teaches too, it's interesting and easy to follow. If you are interested, you can check it out here:Please Log In to view this link! Do you also have other sites to learn music for free?