The way I understand it (I'm still a newbie, too) I would use a visual model of one oval coil with three round magnets. The magnets are side-by-side and spaced close together as if they were on a rotor, and they were three of the magnets from a 9-coil/12 magnet Permanent Magnet Alternator (PMA)
Electrons can be pulled out of an atom, and also pushed into an atom. Electrons have a negative charge. The north pole of a magnet also has a negative charge, and the south pole of a magnet has a positive charge.
"Opposites attract" like when the north pole of one magnet is strongly attracted to the south pole of another magnet. "Like charges repel" just like when two north poles of two magnets push away from each other.
For this example the spinning magnet rotor has the "S" of the first magnet facing the coil, the second has the "N" facing the coil, then the third has the "S" facing the coil. The coil will see them in a S-N-S order, and the rotor is spinning clockwise like a plate in front of you at the dinner table, with the coil under the top edge of the plate with the two wire leads radiating up at about 11 o'clock and one o'clock.
The two long sides of the coil are the "legs" and that is where the magnets fly past.
when the first and second magnets are over the two legs, the S magnet face is pulling electrons in one coil leg, and the N magnet face is pushing electrons in the other coil leg. This creates a pulse of electron flow in one direction. (Clockwise)
Then the spinning rotor moves a bit farther, which moves the N magnet face from one coil leg, to over the other coil leg. Then the last S magnet face moves onto the first coil leg. This movement of the rotor ends up putting magnets over the two coil legs that are the opposite magnet pole order of what is was a moment ago. This creates a pulse in the opposite direction out of the two lead wires coming from the coil. (counter-clockwise)
In this way, an alternating direction of electron flow pulses is created in the oval coil (clockwise, counter-clockwise).
I hope I understand this reasonably correct, and have explained it in a "useful" way.