I worked a bit more on going through the Clojure functions. I might start working on a Clojure web app as well. (And start looking at TensorFlow too. Maybe.)
I also tried some of the scripts on the nftables wiki to move from iptables to nftables. I locked myself out and had to go to my host’s console to reboot the server. I guess copying and pasting will not work and I will have to figure this out the old school way.