Linux, but which one?
There are more distros of Linux than there are flavors of ice cream. So it can be entirely confusing to decide which one to use. Do they all have any real differences? Some do, some don't. Let's see what those differences are, and how we can use them.
DEBIAN
Debian is a very old distribution. A lot of other distros are based on it. Debian is superb for stability. When you need a system that doesn't change very much, and is able to handle both modern and older hardware, Debian is your best friend. It is rock solid and it's very easy for a novice, yet modern enough for a veteran user. Like every other linux distro, it is endlessly customizable. So, what are the real world implications for use? Business applications, older hardware systems and places where stability reigns supreme.
FEDORA
Fedora Linux is based on Red Hat Enterprise Linux. Red Hat is known for it's security and business applications. Fedora being based on Red Hat means it's great for business and has excellent security. Fedora is known for being on the bleeding edge of most software and has a robust set of built in apps to help get the job done. If you are running a small business or only use your computer for work, and your software is compatible with it, Fedora is a wonderful business OS. It can also be used for home use. I had it on a a laptop and it did fabulously.
ARCH
Arch is another old distro. It's been around for a very long time. It's excellent for customization and and having the newest of everything. Arch is wonderful for the experienced user. Being comfortable with the terminal is a must for Arch. Yet, it doesn't take that long to get used to. I use an Arch derivative, Manjaro, as my daily driver and it is phenomenal. It does everything I want it to and more. I can play my entire steam library on it, do all my office work, and do all my audio and video editing.
UBUNTU
Once the most popular distro ever, Ubuntu was made to be easy to use and have the most compatibility. It was the most popular for many years, but after many (in my opinion) stupid decisions on Canonical's part, it's derivative, Linux Mint, is the most popular. Like older Ubuntu, Linux Mint is easy to use, familiar to Windows users and it just works. Linux Mint is an excellent choice for older hardware too, especially LMDE, which is Linux Mint based on Debian. Ubuntu is good for most tasks, and has one of the largest help forums on the internet. If you want something well rounded, easy to use and stable, Linux Mint and Ubuntu are solid choices, but I prefer Linux Mint just a little bit more.