If you are bent on learning how to play the keyboard properly then I suggest you get hold of the Yamaha EZ200 as it comes with the Yamaha Educational Suites and Guide Lamps. These are very good learning tools you can rely on. The lighted keyboards will make playing fairly easy even for a beginner.
Choose from one of the 100 built-in songs which you can easily play because the notes or keys that you are supposed to play lights up. Just follow the guide lamp and you set. If you keep on playing the same song with the guide lamp, you will be able to master the keys even without the guide sooner or later.
On the other hand, the Yamaha Education Suite allows you to learn the name and the notes of the chords which are displayed prominently on the LCD screen. Try the seven lessons and have your playing skills monitored, evaluated and graded right after each lesson.