Danny D,

Both manuals (X-series and Sd1) cover
* creating styles from cratch.
(How to create all component parts, how to copy from existing or custom styles, how to copy from other keyboards via MIDI etc)
* voice editing tips (how to 'create' your own voices etc)
* sampling and tips (creating loops, straight samples, cleaning samples etc)
* vocal harmonizer and tips (controlling the harmonizer manually, automatically etc)
* attaching wave files to MIDI files or accompaniment (SD1)
* Song play and record tips and tricks
... plus lots more.

These manuals do not only cover the 'HOW TO DO ...' but also the 'WHY you would want to do..'. This way, you are exposed to a lot more features your keyboard can do which you might not have been aware of.
Just contact Dan O or George Kaye for more information!

AJ