Yamaha Dd Where Can I Find Training Materials For Yamaha Dd-65?

Where can I find training materials for Yamaha dd-65? - yamaha dd

I have a Yamaha DD-65 Digital Drum. But I can not find include a manual or a book on training for the digital battery. All books learn to play drums, similar to, but I'm more interested in this battery. If you have any idea what book can I refer?