On Ubuntu 18.04 LTS the principal tools are installed by default.
For surfing is present FireFox, for office work is present LibreOffice, etc, below there are some extra tools that we suggest to install.
*** DolPhin – is a powerful graphics interface to surf in the PC directory. It’s extremely configurable and below see our preferred configuration.
*** Kolour Paint – It’s very easy graphics editor
*** nmap – it’s a tools for analyze your network.
For install it use the command: sudo apt install nmap
For more info see here.
*** How to visualize Data & Time on the top bar on UBUNTU Ubuntu 18.04 LTS, see here.
*** See here if you need to know the Linux basic commands.