You will want to go to the services tab on your router to make the IPaddress of the Raspberry Pi semi-permanent. Get the mac address of your Raspberry Pi and then decide what address you want to use. We used 192.168.1.141 for whatever reason.
Llater when you want to SSH into the unit it will make it easier. One thing to note is that you must use a username on the Raspberry Pi to log into it.
$ ssh firstname.lastname@example.org
better (use whatever name you set up for the raspberry pi in the router):
$ ssh pi@raspberrypi
Also see: https://www.instructables.com/id/Red-October-network-discovery/
Note: By using ssh means you do not have to leave a keyboard attached to the Raspberry Pi. Saves energy and less cables to deal with.