#2
its not a day in GG&A without a VK settings thread is it?

there are dedicated sites just for this

theres a settings sticky

if you have half a brain you can find a decent tone on any decent amp if you EXPERIMENT
Get off this damn forum and play your damn guitar.
#3
There are suggested settings in the booklet too.

Pick one of them and fuck around with it a bit until you find what's right for you.