...how does the remote monitoring work? Should I open a port in the rig's firewall (windows) and then type 192.168.X.XX:3333 in the browser of any computer of my network?
In the miner folder there is a folder called "Remote Manger". There is a program in there. Enable monitoring (default port is -3333 (read only)). You can also use browser to just see current output. You don't need to open firewall port if on the same network, just allow miner access first run. If opening port to the outside world, and using positive port (full control), make 110% sure you set -mpsw, there are people that run bots to find miners and overwrite config. You can easily change config remotely with full control which is quite useful, just use locally, or use password.