I needed to learn how to use the Nmap and Zenmap tools for devices connected to my network. The first video below is by far the one I would consider to be the most valuable. The others had good nuggets that can be used with Nmap.
Nmap is a very powerful, open-source utility that allows you to discover and audit computers and devices on your network. That, coupled with a host of prebuilt scripts, will produce even more information without you having to do a tremendous amount of work.
Nmap, despite the 90’s look of their website, is not a new tool and has a huge following.
After installing Nmap on your computer, it would be wise to read the “man page” in Terminal or Command Prompt by using the following command:
man nmap. This will show you all the potential flags that can be added to a Nmap command.
Website: A very comprehensive guide from ByteXD on how to use Nmap