The task may look daunting, cause you don't know how just yet.
I did it when I didn't know much more than how to do an oil change.
Take the seat(s) off
Loosen the rear axle nut
Loosen the left shock bolts (this is the easy way)
Figure out how to lift the rear wheel, a floor jack will do nicely, ropes and a tree work.
stick a couple of blocks underneath to hold it up.
Take the plate off for a little more room.
Take the nut off of the brake cable, pull the cable out and reattach the nut to the cable.
Take the axle out, BTW don't bother loosening the adjusters, keep the left on the left and the right on the right so you don't need to adjust when you put them back.
Take off the left shock, take off the belt guard, if you don't have to fight these it really gets easy. Oh yeah I fought them.
Slip the belt off the pulley and roll the wheel out.
the pulley just pulls out off of the wheel and the brake hub does too.
Take a look at the spacers when they drop, note which one is bigger (left)
OK? Take your time. Speed comes with practice. Take all day. Get distracted. Hey if you don't care of that girl...
When you put it back together, make sure the slot in the brake hub lines up with the tab in the swingarm.