How to properly sand and stain wood for a professional finish?

To properly sand and stain wood for a professional finish, start by sanding the wood with progressively finer grit sandpaper to smooth out any imperfections. Make sure to remove all dust before applying the stain. Apply the stain evenly with a brush or cloth, following the wood grain. Allow the stain to dry completely before applying a clear coat or finish for added protection and shine.