Use an online keyboard teaching method to gain a basic understanding of the bass and treble clefs and where the notes are located on the keyboard. An online keyboard site is also a good way to approach learning the major and minor music keys in a systematic way, which will make it easier for you to understand the basic skills necessary to read and write keyboard music. A number of free keyboard learning methods designed for beginners are available online.
Focus on learning middle C first and the notes on the treble clef as they relate to this key. The treble clef is a series of five lines and four spaces that represent the middle C position on the piano. The notes in the spaces are F, A, C, E (or FACE), and the lines are E, G, B, D, F (or Every Good Boy Does Fine). These phrases will help you recognize the lines and spaces. The middle C is the line below the first line of the treble clef. If you start on the first line E and follow the music alphabet backward, the space below the line is D and the line below that is C. If you follow the treble clef forward, the note names progress forward in alphabetical order, always repeating the same seven notes, not counting sharps or flats.
Introduce yourself to piano chords. Chords are indicated when notes are stacked together on the musical staff and played simultaneously. The name of the note is usually the name of the lowest note in the chord. Chords are often played on the bass clef with the left hand. A good way to learn to read chords on the piano is by visiting a website that shows a graphical representation of how the chords look on the staff and how they are formed with your fingers.
Play beginning sheet music to help you practice the notes you learn. Playing simple songs not only helps exercise your fingers, it reinforces what you learn about reading notes. The more you use practical application of the notes you learn, the easier reading keyboard notes will become and the faster you will be able to develop good sight reading skills.
Put it all together once you have mastered chords and single notes. Stick with the simple beginner's music at first. This will use easy rhythms designed not so much for fancy music but to acclimate you to seeing notes on the staff and finding them on the keyboard.