Not the commenter but companies like Digital Ocean has a veritable treasure trove of material that's well put together: - https://www.digitalocean.com/communi

Not the commenter but companies like Digital Ocean has a veritable treasure trove of material that's well put together: - https://www.digitalocean.com/community/tutorials https://www.digitalocean.com/community/tutorials - https://community.hetzner.com/tutorials https://community.hetzner.com/tutorials For example: https://www.digitalocean.com/community/tutorials/ufw-essentials-common-firewall-rules-and-commands https://www.digitalocean.com/community/tutorials/ufw-essenti... Learning how all these things fit together, when to use what, etc is much harder of course. Wisdom like that often requires time, effort and persistence.