I have the books listed below... and the DVD (you can learn a lot by watching how he plays, plus it's a good movie). I was using a friends keyboard until it stopped working. So I'm in the market for a new one. From the reviews I've read the Yamaha keyboard listed below is a very good beginner's keyboard for learning the piano. Plus it's inexpensive compared to the real deal or an 88 key keyboard.
Adult All-In-One Course: Lesson-Theory-Technic: Level 1Yamaha YPT400MS Portable Electronic Keyboard with  61 Full Size Touch Sensitive Keys and Keyboard StandThe Pianist
Adult All-In-One Course: Lesson-Theory-Tech...
by Willard A. Palmer
$10.85
Yamaha YPT400MS Portable Electronic Keyboar...
The Pianist
The Piano Handbook: A Complete Guide for Mastering PianoM-Audio SP-2 US65010 Sustain Pedal Piano Style Sustain Pedal for KeyboardsYamaha PKBB1 Portable Keyboard Bench
The Piano Handbook: A Complete Guide for Ma...
by Carl Humphries
$19.77
M-Audio SP-2 US65010 Sustain Pedal Piano St...
$24.90
Yamaha PKBB1 Portable Keyboard Bench
$28.45