Drywall mud is the thick, goopy white stuff you use to fill the seams between boards.
To fill a hole where a breaker was located, you can use a piece of drywall or a drywall patch kit to cover the hole. Secure the drywall in place with drywall screws, then finish the patch by applying joint compound, sanding it smooth, and painting to match the wall. Alternatively, you can use a filler specifically designed for patching holes in walls for a quicker fix.
Yes, we all do that.
There are a few ways that you can repair a large drywall section. One way is to use a patching compound and apply it over the area that needs to be repaired. Another way is to use a drywall adhesive to attach a piece of drywall over the area that needs to be repaired. Cut a piece of drywall to fit the hole. Attach the drywall to the studs with drywall screws. Cover the seams with drywall tape. Cover the entire patch with joint compound. Let the joint compound dry. Sand the joint compound. Paint the patch. For getting the professional drywall patch repair service contact us.
You can use caulk or wood filler to fill the gaps between the crown molding and ceiling. Caulk is more flexible and can accommodate any movement, while wood filler is better for larger gaps and provides a seamless look once painted over.
You use scrap pieces of drywall and joint compound.
PVA is not commonly used on drywall.
If by wall board you are referring to drywall (aka gyprock or plasterboard) then you use drywall mud and tape in the usual manner. If however you are referring to paneling, then it is a different matter.
No, you don't use drywall anchors if you can use a stud.
Regular drywall primer.
Wood, an possibly clay (or grass) to fill the gaps, possibly hides for insulation and/or waterproofing.
Yes, you can use Kilz over drywall. It is an undercoat, or primer.