Depending how deep you want to dive into Linux, there is a great ebooks collection available:

https://www.humblebundle.com/books/linux-for-seasoned-admins-oreilly-books

You mean sth like cat <(history | cut -c 8-) history.txt | sort | uniq > history.txt? Not sure if it possible to remove the file names.

It should probably work to put it in .bash_logout.

Good point. Will do.

https://en.wikipedia.org/wiki/Bcachefs

That’s not necessarily true. There are programs/plugins like scd in zshell which make your life easier. https://github.com/ohmyzsh/ohmyzsh/blob/master/plugins/scd/README.md

Clear vote for Fedora,