05 replace inboard boot

Both inboard boots on my 05 Rancher need to be replaced. I’ve removed the right, front axle and have a couple of questions:

1) There is something called a snap ring (42206-HA7-671) that goes on the end of the shaft that is inserted into the differential. What happens to this snap ring when I pull the axle out? Does it fly across the room? I can’t seem to find it.

2) To separate the inboard joint, I need to remove something called a stopper ring (42206-HM7-003). How do I do that? Do I need a special tool? Maybe a dental pick??

Thanks in advance. I’ll have more questions as I make more progress.