1. Update the system
sudo apt update && sudo apt upgrade
2. Enable additional repositories for more software using software&update app

3-Enable ufw
- Method 1: using a command line
sudo ufw enable
- Method 2 : using gufw
sudo apt install gufw

4-Install ubuntu-restricted-extras
sudo apt install ubuntu-restricted-extras
5. Install synaptic package manager:
sudo apt install synaptic
6. Enable ‘Minimize on Click’ for the Ubuntu Dock
gsettings set org.gnome.shell.extensions.dash-to-dock click-action 'minimize'
7. Customize your desktop with ‘Tweaks app ’
- Change GTK theme & icons:
sudo apt install numix-gtk-theme papirus-icon-theme moka-icon-theme

Note: Use Tweaks app 'appearance section' to select the new installed icons & themes
- Try the new Communitheme:
sudo snap install communitheme
Note: after install it logout and select it from GDM

- Move window buttons

- Enable ‘battery percentage’ in the top bar

- Change system fonts

- Move the dock to button

- Install & manage GNOME extensions:
1. Install the gnome shell host connector and the gnome shell extensinon packages:
sudo apt install chrome-gnome-shell gnome-shell-extensions
2. Install the gnome extensions website add-on

3. Install some extensions for example openweather (for weather information) & system-monitor (for cpu and memory usage)
Note: the system-monitor extension need this packages to work:
sudo apt-get install gir1.2-gtop-2.0 gir1.2-networkmanager-1.0
8- Configure Firefox for more privacy
- Install this 3 ad-dons : ublock orign, facebook container, HTTPS everywhere
- Change the history and cookies preferences

- Enable tracking protection

- Disable Firefox data collection and use
