Try the interactive tutorial, or download the Sheet music here: https://musescore.com/user/243741/sco...
Musescore does not allow downloading music sheet for pieces that are not public domain (unless using pro account I think). Please don’t be mad at me if you cannot download it, but you can still read it online :)

Also: I tried to find the correct composer, but I am not sure. Feel free to correct me.

This is an adorable piece, which I find to be mostly dominated by the main voice and a tuba (I think), which I tried to capture the most. This piece gets a lot harder if one also tries to play the offbeat notes (here: a note coming an eight note earlier). The piece becomes a bit more lighthearted and gains more distinction between the two voices. But feel free to play it on beat instead to make it a bit more playable.

Enjoy!