>>Your explanation of the guide laser was not comprehensible to me

If you've never used a guide laser, then I'm not surprised. They interact with dust in the atmosphere and after dark appear to be a long line pointing, well, wherever the laser is aimed. (These are a good bit brighter than the ones you might have used to entertain/frustrate a cat.)

Now, imagine that the laser is exactly parallel to the axis of the tracker pole and the tracker is on a mount that allows changing how high up from the horizon (elevation) and compass direction (azimuth). Then it's a matter of loosening stuff so the tracker can move, pointing at the NCP, locking it down.

It's much simpler to show than to tell but the end result is the tracker pole being parallel with the earth's axis of rotation and the motor in it running at the same speed the planet is rotating as measured by movement of the stars on an imaginary 'celestial sphere' which differs from actual rotation by a few minutes/day.

I've been using double the moon's diameter for a few years, so went from that.