I updated section 8.
8. Open https://localhost:7875 for GUI. Some browsers have problems using localhost and you actually have to use the numerical IP address of 127.0.0.1 in place of localhost in some cases if your browser gives you issues. https://127.0.0.1:7875
I dont believe its required to use https but recommended. I believe http is still supported but you need to useport 7874 instead of port 7875 if you want to use non secure http to access the gui