silmaril

So I tried to follow some tutorial about flakes, but it seems these are extra-experimental still.

I am using NixOS 23.11 with Nix 2.18.1 in a VM (those are the most recent stable versions, right?).

Trying around I already found out that instead of eg. nix flake update I have to use --extra-experimental-features two times to get this simple command:

nix --extra-experimental-features nix-command --extra-experimental-features flakes flake update

Searching the web I found several different things that people put into their /etc/nixos/configuration.nix to enable this globally, but none of those worked for me. I assume there is still a way to do this - can someone please tell me the correct syntax for Nix 2.18.1?

What makes things worse is that I cannot start playing around with home-manager and flakes, because home-manager switch flake . seems to use nix flake internally, which leads to errors instead of results.

Whe using my discuss.tchncs.de account with the app Jerboa on my Android phone, I get a message

This account (silmaril) is being verified

and things don't work, whenever I try to use certain functions, eg. listing my saved postings.

If I continue trying, the message changes to

Failed to connect to instance (https://discuss.tchncs.de/)

General reading of posts still works.

So I am wondering if there is something I still have to do in the verification process of my account?

This might just be some bug in the app or incompatibility between app and server - but before digging deeper into this I wanted to check if there is a known solution.

I heard a lot about the concepts of nix and NixOS and I'd love to try it.

After installing the VirtualBox demo, I keep getting stuck with every tiny step I take, though.

So I was wondering if there are any tutorials for beginners that you can recommend?

I couldn't find anything on the internet - everything that looks like a tutorial presumes a lot of things everybody seems to know about nix, so no need to explain those.

Where can I find those explanations to make the first baby steps with NixOS?

To put it in other words: Where is NixOS for dummies?