I recommend checking online for videos and forums to assist you in setting the sight for your rifle. With each rifle and barrell, it will differ on how the sight is set and someone with more knowledge may be able to assist you.
The same as you would any other rifle.
To sight in a rifle without shooting, you can use a bore sighting tool or a laser boresighter. These tools help align the rifle's sights with the barrel, ensuring accuracy when you do eventually shoot.
Look at gunparts.com or Numrich arms
Sometimes it on the top of the barrel near the rear sight. Sometimes it's on the side of the barrel.
The rear sight must move in the direction you want the point of impact to move. The front sight can be moved in the opposite direction.
Blade type mounted on a dovetail cut in the barrel
"IF" it's on the rifle it will be on the left side of the barrel just below the rear sight. However it may not be on the rifle at all.
S-130 is a type of rear sight used on Mossberg rifles- but not the model of the rifle. Take a look on the barrel.
This BB rifle is made by Daisy. The number will be on the barrel in front of the rear sight.
The sights are dovetailed into the barrel, you can get them out using a brass drift pin.But you run less of a chance of causing damage to the rifle and sight if you use the tool.
I do not personally, but yes, there is a single shot rifle that can have the rifle barrel replaced with a shotgun barrel.
Laser sight is a small visible-light or infra-red laser used to enhance the targeting of weapon systems. It can for example be mounted parallel to the barrel of a handgun or rifle.