I've been using Windows since the days of 3.1, practically my entire life. So I'm really comfortable with how windows operates and how to do the things that I want to do.
I've dabbled around with Linux over the years, but am now considering trying to make a full switch to it.
What are some resources to "learn" Linux properly? Such as understanding the filesystem, basic security practices, essential tools or commands, etc?
Install random Linux distro as virtual machine or dual boot, use it until you run into something you can't fix. Look for an alternative.
Do this a couple of times, my path was: Ubuntu, Manjaro, PopOS, Zorin, Debian, Mint. I ended up replacing windows completely with Mint. It's nice, easy, customizable, and I can play my games on it when I need to 👍