Hanging drywall requires physical labor and heavy lifting, so do not attempt to do this yourself if you cannot handle large sheets of drywall at a time. When hanging drywall, bigger is better. You want as much solid surface as possible, so as not to create too many seams. Leave your drywall about a ½ inch off of the floor for flooding purposes and expansion. Do not lift more than you can handle.
Apply adhesive to the studs and work from the top row, downwards. Line up the sheet of drywall with the studs and adhesive. Nail into place. When cutting a piece of drywall to fit, you will make a score on the front of the sheet with a knife or razorblade (use caution), and snap the drywall backwards to create the cut. Slice the paper off of the edge of the snap and smooth any rough edges with coarse sandpaper or a heavy-duty file.
You will need to screw the drywall into the studs, to eliminate any large seams, so mark where the studs are once the drywall has been stuck to them with adhesive. The process sounds simple enough, but it requires skill that only comes with experience, so if you’re not familiar with the installation procedures, then leave hanging the drywall to the professionals.
Drywall is usually hung in construction environments, which are in motion after proper inspections and permits have been issued, so do not attempt to build anything without consulting your city first to see what the regulations are. If you are replacing a rotted piece of drywall, or repairing a threshold, etc., that is fine, but you should still do the necessary amount of research and take advice from your local professionals. Make sure you wear safety gear when handling drywall and the required tools. You will need safety glasses, gloves, boots (such as steel-toe), and long sleeves to protect yourself.