Piano-Music-Lessons offers a great e-book with corresponding auio lessons. While that is all, it may be all a beginning piano student needs. Lessons focus on chord progression.

The e-books, short animated video presentations, and bonuses are well done, but the price might scare you away.

PianobyPattern from Albert Edge does a nice overall job of teaching patterns and chords. This site is great for those wanting steps narrated by a professional.

PianoisFun by Anthony Fernando is a great game for young music learners. It is best utilized by music teachers or instrctors working with young students.

Play Piano Tonight is not a worth while product for anyone seriously wanting to learn how to play the piano. Be leery of all that it claims to offer.