And now you can be proud of yourself

Now that you have learned your first steps in the console,
and if you feel adventurous, you may try out some other things with computers.

Using Linux is like a real world game. You choose a quest, explore a bit and work to the quest reward which brings you real benefits. The skills you learn along the way? Level up!

For example you say "I want to have a mediacenter".
After some search you find the Raspberry Pi and https://libreelec.tv.
And voila, you have mediacenter, friendly to your power bill, cheaper than any one offered in the local market, and way more capable.
(easy difficulty)

Other "quests" (medium difficulty)

• Try Linux on a PC to be free of viruses and get more privacy
  Kubuntu feels familiar for Windows users
• Install Nextcloud on an Raspberry PI to have your own home cloud
• Try OpenWRT on your router (if compatible) to have it offer options like expensive ones

You will find help along the way in the many forums of the projects.