I recently got an S2400 (AWESOME MACHINE!) and was happy to see you can use a QWERTY keyboard with it.
I found this guide for some hotkeys:
I have some suggestion I would love to see possible if they’re not somehow already:
#1. Holding shift on the keyboard behaves as if you’ve pressed shift on the machine.
#2. While holding shift number keys select tracks without triggering them instead of changing to a pattern.
#3. A shortcut for setting the undo point.
#4. Left and right arrow keys allow you to change the selected setting while in setting menus.
Okay that’s all 
let’s make some beats 
!