You will love the following tips because they will help you deal with various issues
Patches usually work best for fixing smaller holes in the drywall
These self-adhesive patches come individually in different sizes and in the form of tape, which gives you flexibility regarding the length at least. Each one has a two-layer structure. The first layer is aluminum screen which is resistant to water damage while the second one is fiberglass mesh for added strength.
Use spackling to cover holes
Spackling is useful when the holes are pretty small. In a different case, you'll have to patch the hole. Nail hole repair is not difficult. Make sure the spackle is placed well into the hole. You might need to repeat a few times. Once it's dried, its color will change. So, you might need to apply textured paint.