Thanks bob123 - I'm not sure what this means. By DE, do you mean which Debian? Specifically PureOS by Purism. Core 0.18.1.
A desktop environment is a window manager (as the name says, managing windows from programs you open) and a bundle of software (e.g. settings manager, network manager, text editor, etc..).
You can take a look here:
https://itsfoss.com/best-linux-desktop-environments/ and check the pictures. Which seems to be the closest to your setup (specifically the task bar and start menu) ?
Generally there are multiple ways to create a clickable shortcut, the easiest probably should be to right-click on the desktop and choose something like
create shortcut.
If you can provide us the name of your DE, we can give you a more detailed instruction.
Oh, ok - PureOS uses GNOME.
Side note - how do you make that nicely quoted box when replying to people on this forum?
You can click
Quote at the top right corner of a post, to quote it:
https://i.imgur.com/9shggKV.pngNice - thanks
Should I do the same thing in the future when upgrading Armory?
If new dependencies are required, then yes.
Otherwise you don't have to transfer anything to your offline machine (except for the armory upgrade of course).
Great.