GFG often explains what a command does but not how it works under the hood (e.g., TCP SYN scan vs. Connect scan, timing templates, firewall evasion). This leaves readers unable to adapt scans to real scenarios.
Read their Nmap article to get the basic idea (10 minutes), then immediately switch to: nmap geeksforgeeks
Nmap is a versatile tool that can be used in a variety of scenarios, including: GFG often explains what a command does but