Install GNOME tweak tool

sudo apt install gnome-tweak-tool -y

Install Media codecs to enable playing of MPEG4 & other media files

sudo apt install ubuntu-restricted-extras -y

Enable and Configure Firewall (ufw)

sudo ufw enable

Install Synaptic Package Manager

sudo apt install synaptic -y

Install GNOME shell extensions

sudo apt install gnome-shell-extensions -y
sudo apt install chrome-gnome-shell -y