Recommended course:

Ubuntu Linux Fundamentals - Learn Linux Server with Ubuntu

Chromium is the open source project behind Google Chrome. They are very similar except that Chromium is open-source and doesn't have some proprietary bits that's added to Google Chrome.

Chromium web browser is already available in Ubuntu's default apt repository and can easily be installed via these steps at the terminal:

Tutorial video:

  1. Open terminal from the application launcher or via the <ctrl> + <alt> + <t> keyboard shortcut.
  2. Update apt's package list from the repository.
    $ sudo apt update
    [sudo] password for user:
    Hit:1 disco-security InRelease
    Hit:2 disco InRelease
    Hit:3 disco-updates InRelease
    Hit:4 disco-backports InRelease
    Reading package lists... Done
    Building dependency tree
    Reading state information... Done
    6 packages can be upgraded. Run 'apt list --upgradable' to see them.
  3. Install chromium-browser package via apt.
    $ sudo apt update
    Suggested packages:
      webaccounts-chromium-extension unity-chromium-extension adobe-flashplugin
    The following NEW packages will be installed:
      chromium-browser chromium-browser-l10n
    0 upgraded, 2 newly installed, 0 to remove and 6 not upgraded.
    Need to get 62.2 MB of archives.
    After this operation, 231 MB of additional disk space will be used.
    ##### snipped
  4. Run chromium-browser from the terminal or from the application launcher.
    $ chromium-browser