The purpose of the alternator is to keep the car charged up and the instruments up and running
The alternator is held in place by two to four bolts. Some are found at the top, others are on the bottom, you may have to dismantle the whole engine to get at it.
In the fire department, one is taught to hit the corner of the window, the whole glass will shatter. Once the window is down, then the cutting can start.
The junkyard is also known as a pick-a-part.
Welders are quite comfortable with grinders. In this case, buffers are replaced with cutting wheels.