OK, so despite all of the "theoretical" discussion here I think it might be the best thread to ask this question. I've picked up bits from this thread, owner's manual, other threads but still am not clear on a few things. Remember, coming from FJ-62 world with simple 4WD and lockers

So...
What is the difference between Crawl Control and MTS and how is MTS engaged?
CC - you hit the button and dial in the speed. You steer. It controls throttle. Does it also control brake?
MTS - when the heck does MTS come into play and how is it different from CC?
I tried playing with these in the snow yesterday and came away even more confused.
If there is a good explanation lurking around on this that I haven't found please point me to it. And no, not the owner's manual. I've spent a ridiculous amount of time with that and the only thing that I learned is another way to get a headache.