Which Ubuntu “Flavor” to Use? . . .

Good summary at link below graphic about the different “official flavors” of Ubuntu.   Additionally,  there are about 35 or 40 “unofficial” versions of Ubuntu (for example, Linux Lite).

The article is well written with many graphics to explain this concept further.

https://itsfoss.com/which-ubuntu-install/

11 Things To Do After Installing elementary OS 5 Juno . .

These kind of post-install “tweaks” articles are routinely available for all Linux distributions . . . Ubuntu based, Mint,  Suse, Fedora, etc.  Makes it fun and simple to improve your base install.

Here’s the post pertaining to elementary OS . . . perhaps the winner in the “great looking” desktop (ok, a tie with Mac OS).

It’s FOSS . . Tweaking your new Elementary OS install