Drywall - USA?

For most new construction, walls and ceilings, after the drywall is installed, the joints are taped and "mudded", the nail/screw head holes are also "mudded", then it just gets a coat of primer, and a coat of paint. The primer and paint are both rolled on with a standard paint roller (and brush, for "cutting in"). Some builders may opt for more than 1 coat of paint. In new construction, that drywall is attached to wooden wall studs. Now if you are doing some remodeling and want to move an existing wall or create new walls, you may choose to use metal studs. They have limitations such as, they cannot be load bearing or some building codes may not allow metal studs below grade (say in a basement). They are extremely easy to work with and I would rather carry 50 metal studs into a job site than 50 2x4's. They work well for quick wall building, and most of them have precut punch outs to run electrical or plumbing. You need to know if you can or want to use metal studs, there are trade offs; you gain speed, but lose strength. It depends on each project.