As for the PDF version, I couldn't find a direct link to download it. However, I can suggest some possible sources:
Yamaha Pianoforte Book 2 is part of a structured, 12-book series designed by the Yamaha Music Foundation for students typically aged 6 and up. It focuses on building fundamental keyboard skills while encouraging musical creativity through solo repertoire, duets, and ensemble playing. Core Content & Repertoire Yamaha Pianoforte Book 2 Pdf
Even if you find a "free" copy, consider these drawbacks: As for the PDF version, I couldn't find
: Pieces are designed to be played alone or as ensembles with a teacher . As for the PDF version