Update your system:
sudo bash apt update && apt upgrade && reboot now
set up a unique hostname - especially, if you have multiple Pi's. for simplicity, i would suggest scannerNN - replacing NN with a number:
sudo hostnamectl set-hostname scannerNN sudo nano /etc/hosts hostnamectl
Not mandatory, but i would suggest to set UTC:
sudo timedatectl set-timezone UTC timedatectl
In case you want to use WiFi
sudo iw reg get sudo iw reg set DE sudo iwlist wlan0 frequency
you should replace above DE with your wifi country; check https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2
sudo dpkg-reconfigure locales
i would suggest to select en_US.UTF-8 as default language