Hi all

Rather than actually wanting to blow anything up, I was after a bit of guidance on what cock-ups to avoid!
As a novice I've just taken delivery of a system4 kit from Roy of DIYCNC.
From reading round these forums I've picked up not to mess about with motor connections with the power on.
Are there any other things to avoid that might not be obvious to the uninitiated?
If a motor stalls does that damage anything?
How necessary is it to use screened cable to the motors?
Roy's manual suggests starting off with the boards set to min current to start with.
Any input welcome, no suggestions are too basic!

Cheers
Ian