I do not have the space for an indepth discussion on how to align the tracker, but there are plenty of websites that cover this information.
Oddly enough, using a wide angle lens, anything upwards to 30 seconds and you do not need to track the sky. The star trailing is so insignificant and the stars themselves are so small, the stars retain their sharp pin point appearance. Over 30 seconds and the stars will begin to show signs of trails if not tracked.
|Orion Nebula Photographed using Motorized Star Tracker|