Using a wired connection may result in faster data transfer around the local network (although your internet connectivity will remain at the same speed no matter which method you use) it also requires cables to be taken from the router to an end point where a device is.
If you have pre-wired your home, this is a simple process. However, in most cases, your home won’t have been pre-wired and you’ll have to have cables tacked to walls or require fairly major work to have them hidden away inside walls, under floors, and through ceilings.
Once your connection type has been established, it’s time to start connecting your devices to your network. They might be laptops, computers, cell phones, home automation devices, even home alarm systems.