There are several apps/websites to learn touch typing from the start, you go from using 2 fingers in their proper places up to the whole hand with exercises that go up in difficulty over time, just do sessions of a few minutes each day and thats it.

my personal recommendation would be https://www.typingclub.com/

As far as I know, CasaOS (same as Cockpit) is installed on top of a default OS install, so you could always access the OS directly to install/configure things outside of it, if the need arises.

I would not say you would be held back by it, if it does what you need. And for what I can see online, you can install any docker container even if it’s not on the default catalog of CasaOS, or access the OS.

If you want to grow your knowledge of how things work, or how to deploy services without CasaOS, you can always do so in parallel of using CasaOS, so I don’t see where the issue could be.

Old laptop, Debian with docker running nextcloud, navidrome, jellyfin, gitea, librespeed, wireguard, dnsmasq, and nginx as a reverse proxy.

I recommend DuckDNS as well, you can run it both sides and set up a daemon to update the domain when there is an IP change automatically.

And with Wireguard you can set up a tunnel between both locations so you can share anything you need.

I’m using Debian, with Docker and running Jellyfin, Nextcloud, Navidrome and Wireguard on Containers on my old laptop. So that would be my suggestion.

You could install CasaOS and/or Portainer, on top of Debian if you want an easier way to manage your server and containers.

If you are not behind a CGNAT, it should be as easy as opening the necessary ports.

I have a reverse proxy running in ports 80, 443 and can safely access Jellyfin on a subdomain without issues from outside my LAN.

Markdown (there are plenty of editors to chose from) + Pandoc (to generate the output in multiple formats), would be my recommendation.

I use my old laptop as a server, and so far no issues with leaving it on 24/7

Been doing the same, just leaving my password-store offline, for me this is enough.

For me personally, when you reach a level where you can think, and communicate in the non-native language (without doing mental translations back and forth) with enough ease and speed, no mater the topic at hand (meaning that even if you don’t know a technical or specific word you can make yourself understood), and even if you make grammatical mistakes or have an accent, the point of the conversation is not lost between participants, then you can consider yourself fluent enough on said language.

My native tongue is Spanish (could you tell if I didn’t mention it?), but I have consumed so much content throughout (and yes I did check how to spell throughout) my life only in English and practiced enough doing conversations both writing and speaking (even with an accent) on the internet that I can communicate with ease and be understood.

I have visited the United States a handful of times for around a month for vacations with family, so I can say that I had to communicate with native people outside the internet now, but I haven’t had any formal education except a few very basic English courses in high school.