Sure! Here are some notable differences between Ubuntu, Fedora, and Linux Mint.

1. Ubuntu: The most popular desktop linux server, well liked by newcomers and veterans alike. Ubuntu is debian-based and uses the `apt` repo system.
2. Linux Mint: Based on Ubuntu, Linux Mint has a smaller memory footprint and uses Cinnamon instead of GNOME. It has many custom tools and some new users like it better than Ubuntu.
3. Fedora: By Redhat and based on RPMs and the `yum` package manager. This could be a good choice for environments with specific security requirements.

PopOS is another operating system to consider. It is based on Ubuntu and prioritizes security while also supporting debian packages and flatpaks. It's created and supported by System76 and has been getting great reviews.

The distribution you choose now is important but a lot of the same functionality is available on each system. I can help you learn to use whichever system you choose.
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