are the factor preset values used when the effect is active
If you load a preset and don't touch any knobs, you will get the preset's values. A knob only has an effect if it is moved.
Is the position of the knobs shown in the console
The knob positions usually represent the preset's values but are not always exact. This will be improved in a future (undated) release.
3. Also, what exactly does the "Get" button in the console do?
It gets the current values from the box. As described in the first answer, these may be either preset values or knob values.