utopiah

I'd add :

0. back up your data

To clarify, I've been using Linux for decades... and I still take notes! For example https://fabien.benetou.fr/Tools/Shell or https://fabien.benetou.fr/Tools/Ffmpeg so please, pretty please, do NOT keep it all in your head! There are myriads of way to record your learning so don't be shy about it.

First and foremost, welcome to Linux!

Few pointers to hopefully help the process :

• "Not knowing where to find anything." indeed, it's disorienting but it will come. You can find actual "maps" but honestly, just as you would do in other operating system, use the search function. If it's not obvious this way, search online. The first few times it will be weird then each time it does become easier until it actually makes sense!
• "The lingering feeling of instability." have a /home directory (not "folder", that's funnily enough a Windows term as they tried to be different, going from the unanimously used / to their own C:\ things) so that you can actually go "nuts" with your installation, actually messing things up but without the fear of losing your precious data! Each new install is an occasion to learn. That being said, Linux is very VERY stable. I've been running the same installation for years, on desktop and servers alike. If something goes wrong it can usually be fixed and it's, again, an occasion to learn. That being said, having a dedicated /home directory on its own partition or even disk gives you the opportunity for a low effort low risk blank slate.
• "The capslock works differently" ... well this one is quick, you're looking for the SHIFT key if you only want to type few characters in uppercase ;)
• "Every once in a while, my desktop icons get rearranged." yet another occasion to learn. What's the bug from? Is there an issue open? Is it being worked on? By whom? How? Why? You might even be able to fix it!
• "It seems impossible to get Firefox to not restore sessions after shutting down the computer with it still open." it's in the Firefox preference : Settings -> Startup -> untick "Open previous windows and tabs", literally the first option.
• "The above all add to a bit of a general ‘stuck together with adhesive tape and love’ feeling." nice, and that's just the surface, it's now YOUR system so you can do whatever you want, even if everybody else disagree.
• "Not knowing how to install programs." well that loops back to all the learning opportunities above and the last remark, it's YOUR system so you can use whatever you prefer, both in terms of apps, settings or even how to install (or not! Check e.g. Nix) apps. There are even "weirder" things like https://github.com/ivan-hc/AM but the point is, you decide, again, always!

So... any petition or open letter to sign?