The print music is complete, very clear on the page. Most pieces included a good dose of fingerings (could be more IMHO), and where applicable, ornaments are written out.
Insert the enclosed CD into either your stereo, your boom box, or into your computer. Doesn't matter, it will work anywhere!!.
Of course if you stuff it in your computer and want to manipulate the MIDI file, you do need software designed to play/edit MIDI files. BTW - MIDI channel 3 is Right Hand, MIDI channel 4 is Left Hand, so one could play along with one hand, change the tempo, make the instrumentation orchestral, etc.etc., and just have some fun!
On the audio CD, the piano piece is played as a performance, so you can follow the score and hear how the work is to be played. The next track is a slow speed performance, with a metronome ticking along. You can play along slowly, and overcome any rhythmic or pitch ambiguities (in other words, no excuses for wrong notes or rhythms!).
The end result is that you will learn to play the piece as well as on the CD! It's a great idea, perfect for the adult studying without a teacher.
And the amazing thing is how inexpensive this is. Only $6.95 per piece.
You get the sheet music, a CD, and MIDI file too -- that's. . . nifty!