A ramp may be used to move heavy sanders from your vehicle to the ground, or from your porch through your threshold as shown here.
Applying stain (as well as sealer and polyurethane) is done using many of the same techniques you’d use when painting. Always begin your stroke a foot or two away from the area you’ve just coated. Then brush (or push applicator) to meet the previously stained area. This will help ensure even coverage.