Rigging and Hacking Questions, What do you use for what? Options

[Ghost in the Mac...]

I feel stupid, but I don't grasp what I'm supposed to roll for rigging and hacking. Some specifics:

1) When hacking, when are Attributes important when making a <blank> + <blank> roll? (It seems that most if not all Matrix rolls are Skill + Program, which seems to mean it doesn't make any difference what your Attributes are. Skills like Hacking are listed as Logic-skills, but when do you actually use Logic + Hacking?)

2) When hacking, when are Persona attributes (System, Firewall, etc) important when making a <blank> + <blank> roll? Again, it seems to be Skill + Program. (I do understand these things have non-diceroll values such as how many programs you can run or how far you can transmit your signal.)

3) When rigging, do you use your Reaction to drive a vehicle, or is this also Skill + Program. Or is it Response? And are you using Spoof or Command?

4) Does a rigging Technomancer use Reaction or Intuition for driving a rigged vehicle since it is through the Matrix and TM speeds are Intuition-based? Does Response come into play? Does the Technomancer use the vehicle operation skill, Spoof or Command?

5) How do you use Encrypt to protect your rigging signal. Specifically, if you action is to command/spoof/control the vehicle, is encrypting then a free action? Or something that happens automatically? Or do you set up encryption on your signals during downtime?

-~GitM