While driving home a few weeks back, I was listening to NPR. They play little snippets of music between stories, and I heard one that night I liked. It was a piano piece I had heard before, and I wished I knew what it was, so I could try to find the music and play it myself. So I visited All Songs Considered, the site where NPR tells you what those little snippets are (they call them "music buttons").
Clicking on the samples, I found it was From Foreign Lands and People, by Robert Schumann. A search at Google for the sheet music eventually led to The Sheet Music Archive, which has PDFs of public domain music, including Schumann's Scenes from Childhood, Op. 15, the first composition of which is From Foreign Lands and People. Print the PDF, take it to the piano, and away we go.
The web is great.