This piano lesson excerpt is part of " Learn to Play Piano with Anne-Lise Gastaldi ", a full beginner course available on http://www.iplaythepiano.com
In this course, all the basic elements are explained step by step by the teacher: sitting position at the keyboard, hand position, notes on the keyboard, learn to read music, meter, articulation markings, crossing thumb, etc.
iplaythepiano.com is the #1 website of online piano lessons for all levels.