Grasp the inside edge of the curtain. If the curtain is double-sided grasp the inside edge of the other panel. Grasp as far up the curtain as you can. This will give you the right leverage to pull the curtains open. This is especially important if you have heavy curtains.
Pull the curtain to one side of the curtain rod. If the curtain has two panels, pull the curtains in opposite directions toward opposing sides of the curtain rod. Be careful not to snag the curtain loop on a segment of the rod. Avoid this by not pulling down on the curtains when you are pulling out.
Fasten the curtain to the wall if a fastener is available. Fasteners are generally giant knobs or hooks that you hold the curtain behind or they are bands of fabric. If you have a band of fabric, unhook one end of the fabric, wrap it around the curtain and rehook it on the wall. This will hold the curtain in place.
Repeat the process with the other side of the curtain, if necessary.
Locate the curtain's vertical cord. This cord is generally behind the end of one side of the curtain. The cord controls the moving set of strings that moves the curtain.
Grasp the left side of the cord and gently pull it. If the curtains don't move, then grasp the other side of the cord. Each corded curtain is set up differently.
Pull down on the cord to open the curtains. Stop when the curtains are fully open and you can no longer move the cord.