Installing a lock on a door in a house is not difficult when you follow directions. Most modern door locks have only a few screws you need to attach correctly for the lock to function properly. Yale locks are a popular brand sold all over the world. They manufacture different locks for different purposes for home and business and you should install them per instructions provided with the unit. This is how to install a single cylinder Yale deadbolt on the door to your home.
Install the latch bolt with the button position at the bottom into the hole on the edge of the door. Screw the latch into place per instructions that come with the screws provided.
Screw the cylinders together with these screws. Turn the thumb latch and the key in the cylinder to confirm that the latch bolt operates correctly. Tighten as needed.