My wife cleard up my confusion on middle C for the piano - it's one line below the staff of the treble (G) clef - for piano sheet music. Pianists also use the bass (F) clef staff for many left hand fingerings.
Luigi: always wondered how the many different instruments all use the same staff for their respective parts (e.g. a classical or jazz orchestra). Getting back to Kimi's question about how to figure out how to construct a chord; (e.g Gm6) maybe you could impart some of your theory knowledge. Gm6 would be a G chord with a flatted 3rd (Bb) with a 6th (E) added ??? Is the sixth added higher or lower than the rest of the notes ? Or am I just confusing the issue much as Raskolnikov felt and should I just shut up now ?