Mint. it's slick, stable and similar (usability wise) to people coming from windows

Put Linux on one of those spare hard drives and simply mount the existing drive as a second drive in Linux.

This will give you access to all your current files from within Linux without having to do anything. Move over what you want and need as you use Linux. At some point, you will probably want to reformat the original Windows drive for extra space. You could consider mounting it as /home at that point.

Choosing a distro is a matter of taste. I can tell you though that I have moved a few Windows users to Linux Mint and they are all happy with it. My last one was LMDE (Mint with a Debian base).

Fedora Silverblue (GNOME) or Kinoite (KDE) are great for a "hands-off" OS. They are atomic so very hard to accidentally fuck up the system. Apps are installed easily via the GUI software center. I tried both when I switched to Linux and found I loved the simple but powerful and delightful-to-use experience of the GNOME desktop.

I know, it sounds odd, but: Arch! Once my best friend wanted to try linux. So he asked me, which distro to use. I gave him an honest answer: "I use Arch. But for beginners I would recommend Mint." He don't gave a shit and installed Arch anyways 😅 - with success! That's when I noticed, that the Arch Wiki is actually SO GOOD, that even a newbie can install Arch without any help. It's just a bit more time expensive, compared to distros with an installer. However, there are some huge benefits, that made me switch to Arch:

• I used Ubuntu on my daily driver before. However "stable" packages means in this case "antique". A 3 years old version of Sway isn't more stable than the newest release version.
• I never survived a dist-upgrade. That's why i prefer a roling release linux today.
• Your system is slim, because you only install what you really need. Also you know your system this way.
• Especially for gaming it's good to have the newest kernel + drivers.

However, you should also notice the down sides. Sometimes an update breaks something. It doesn't happens often, but it happens. A few years ago the bluetooth stack was broken, so i wasn't able to use my headset during a meeting. However they released a fix like a few hours later, so I just needed to update. But still: That's something to consider too.

Always great to see more people curious about Linux, especially when the motivation is escaping ms-bullshit..

If she wants something that just works but still feels polished and professional, I’d actually give openSUSE a look. Leap is rock-solid and perfect for people who want a stable system that behaves consistently and doesn’t demand much maintenance. Tumbleweed, on the other hand, is rolling release, so it’s always up to date but still surprisingly reliable thanks to openSUSE’s testing process.

Both use YaST, which is one of the best control panels in the Linux world. You can do a lot with YaST, like manage users, partitions, updates, drivers, and networking all from one place without ever touching the terminal.

Mint is also a fine choice as well....

So my standard thing with newbies is to suggest putting it on their old machine rather than dual booting. I feel most people will be amazed at how fast linux runs on their last pc and how slowly windows does on their current and if they dual boot it can lead to lazily keeping it booted in windows were as if the linux is available for web browsing and such it will help getting used to it. What I use I think is good for newbies. Its a lazy mans linux in the sense that it comes with everything you need out of the box. Its called zorin and its an ubuntu lts respin and once installed without doing any further tinkering you can rdp to a windows host, burn a disk, open and edit sound, image, and video files. along with standard web browser and libre office and such. I think most folks could go with it unmodified for most everything they need to do. Since its ubuntu you can add programs from the software program and update with the update program but if you feel the need to do like windows many downloads will have a debian linux option which when double clicked will work fine. also out of the box it has wine with play on linux installed so often times windows programs can be run by right clicking them and telling it to run with wine.

Here are some tips once you have chosen:

You can change your desktop environment later.

If you do your install with seperate partitions for /home and others, leave 10% unallocated. Also make /bin about 15gb and /boot about 1.5gb. When you eventually run out of space, you can use KDE Partition manager to add the unallocated space to the partition you need, even if you set up encryption (gparted doesn't play well with encryption). You can install Partition manager as a package, you don't need to use KDE Plasma.

Using a drive mirror is a good idea. Maybe use it the second time you install.

If you want to use a cool filesys like zfs, just use btrfs for now (licensing issues). Ext4 will also work for desktop user needs.

If you go with Debian, you can add repos to your /etc/apt/sources.list file. But it is a one-way trip, so before adding sid, consider running your program in a vm. Non-free non-free-firmware and contrib are fine

start with something simple that’ll teach the basics of Linux – like LFS

While I'm here, I might as well figure out one for me, I usually stick to gaming and graphic design programs since I'm an artist. but honestly I do anything under the Sun and whatever my whims fancy so flexibility is a must

I'm a fan of the uBlue distros Bazzite (gaming), Aurora (KDE), and Bluefin (Gnome and software devs). Other than that, Mint, Fedora, or Pop beta if you want to try the new Cosmic desktop

I have been thinking this for a while too and it's a toss up between Fedora and Debian for a regular user and if you are gaming then something like PopOS or Bazzite I would want someone non-techy using something that is not a rolling release distro like Arch.

There are so many resources on what to pick as first distro. I do not understand why people don't check those out first ...

So you know basically as much as her. You guys can experience it together how great.

Did this with my SO, they have mint like me. And they like it!

They wanted puppy linux though xD