I remember being at the stage you are. Hearing how wonderful the world of Linux is... just run some simple commands and voila! The World At Your Feet.
But it ain't working.
As long as you don't bother looking up the errors that pop up, none of this will ever make sense and you will continue asking for help when at least the initial problems are clear as day to others.
Cannot write to ‘cloudron-setup’ (Permission denied). Start there. In what directory are you? (Whats a directory, you ask... ok, start there then.) What causes "Permission denied" errors? Fix it.
You can do it! It's a rewarding adventure!