Ask HN: What is a piece of advice that you would give to a new Linux user?

I'd recommend doing your experiments on a virtual machine like Hyper-V so you can spin up different version and kill or revert them if you have problems. On Windows, you can run Ubuntu (WSL) like any other app.

Assuming a casual user. Follow a quick tutorial on how to use and navigate the command line. As for everything else, just learn it if and when you need it.

https://tldp.org has many good resources

learn about the posix standard , if you understand the past it becomes much more clear why things are the way they are.