Always change the default Pi password.

passwd

Create another user.

sudo adduser levi
sudo usermod -aG sudo levi

Copy your SSH key to the Pi.

ssh-copy-id levi@host
ssh levi@host
sudo deluser -remove-home pi

Change the hostname.

sudo raspi-config
  • System Options
    • Hostname

Reboot. Then update.

sudo apt update
sudo apt upgrade -y

Install some basic stuff.

sudo apt install -y     \
    ca-certificates     \
    && sudo update-ca-certificates

sudo apt install -y \
    gnupg2          \
    htop            \
    vim