Gentoo.

Uhh.

MX Linux, I suppose.

But: You might try the Distrochooser.

Seconding Slackware. Especially for Linux software and graphical/desktop environment exploration if you do the recommended full install.
Even if you, at some point in the future, when you're more in touch with Linux, find that Slackware out of the box doesn't deliver all the software you need, and you really find the lack of dependency resolution of the package manager simply unacceptable (even though it's super easy, or I wouldn't use Slackware), then you'll at least have gotten your feet wet with one of the more sensible and stable distros otherwise.

It's easy to explore Linux that way, in my opinion. It's very stable and the full install comes with redundancies, which perhaps sounds offputting, but you get several text editors, IDEs, media players, graphics editors and painting apps, office tools, etc all configured sensibly and working.
That way you get a head start in your choices, without having to immediately ask for even barebones recommendations for the various fields.

I tried Geany. I tried Kate. I tried nano. I tried vim and stuck with that one in the end.
I wouldn't have known about Krita if it hadn't been in Slackware until I don't even know when.

I wouldn't have known about neato stuff like "soma", a terminal music/radio player, which kept me entertained while I messed around with terminal stuff (since Slackware was my first actual serious distro foray).
I played killbots. I made some jigsaw puzzles out of some of my pictures with palapeli. I had fun with kstars, etc, and the internet worked for me too.
My actual first tries with Linux were years earlier and I was confused with PPP and whatnot, but Slackware just worked for me.

So, yeah, if I didn't stick with Slackware after doing all that, I'd still would have gotten the knowledge about software and system management I gained from it.
I did, though. I haven't used anything else for my own installations since.

good day,

for decision you better choice
family, familiarity:
1) advanced -- Slackware, Gentoo, Arch, Crux (for beginner - Salix, Sabayon, Calculate)
2) democracy -- Debian (for beginner - MX Linux, Mint)
3) corporate -- RedHat, Fedora, Suse, CentOS (for beginner - Mageia, PCLinux)

and what DE to use in you distro
DE:
1) blow of mind -- KDE, Gnome3
2) standard -- xfce, Mate, lxde, lxqt, icewm, windowMaker
3) modern - Cinnamon, Deepin

1 members found this post helpful.

Heh!

1: I use KDE (plasma) for my general computing.

2: I use XFCE for most games (yes, I am a gamer)

3: I use LXDE for a particular game because of "REASONS"

4: I use Fluxbox for coding or testing programs

Yeah... I am kind of complicated