So, where can we study piano lessons for beginners ? Well, you can start by clicking the link there or just visit http://www.pianomother.com/Beginner_Piano_Lesson_Piano_Notes.html. There you can find many beginner piano lessons including the very basic lesson : Black and White Keys that shows the layout of a piano.
You can check out the video below for the beginner piano lessons :
After you recognize the layout of a piano, then you can proceed to the other piano lessons for beginners provided there. I've already tried several lessons there and I can assure you that it will help you a lot improving your basic piano and musical skill. So good luck and hope you can become a great pianist.