You will find the PSR-2000 Tutorial+ site a big help in learning how to use your new keyboard. Here is the URL to that site:
http://pages.prodigy.net/watersj/Yamaha2K/index.html

(a short-cut URL is: http://devoted.to/PSR2K )

I have just added a whole section on the Music Finder system. It provides a number of lessons on how to use the Music Finder (and how to get the correct song titles in it.)

As for the musical notation for the song, you are out of luck. When you play a MIDI file (the SONG option), you can see the music displayed. But the Music Finder system contains only information about a song title and the style (and tempo) suggested for that song. There is NO information about the actual song itself.

I am planning on adding a section on "fake books" to the Tutorial site. Some Fake books will have the music for 1,000 or more songs. They provide the melody line, the chord, and the lyrics -- all you need to play the song on an arranger keyboard. Hopefully, I'll have that up sometime later this month.