

Half a dozen people said so already but I’ll repeat :
backup your stuff.
You are like a tightrope walker on a high line without security. Sure the view is amazing, yes you feel free… but a misstep and that’s it.
How? Well depends what your data is but start simple, copy your most important files, e.g. family photos, personal notes, etc (NOT HD movies from the Internet… not anything you can get elsewhere) on a USB stick you go stuffed in a drawer.
Once you DO have your stuff saved though, please, pretty please DO go crazy! Have fun, try weird stuff, bork your installation… and restart from a neat safe place. It’s honestly amazing to learn, so deeply empowering for yourself and those around you. Just make sure your data don’t suffer from it.

Very cool, reminds me of https://jsandler18.github.io/tutorial/boot.html