So here some homework to use
almost everything you learned about Nmap up to now.
STEP 1: Find the live hosts of your network block using Ping scan and save the results in all formats
STEP 2: Create a host list using the Grepable output of the previous scan
STEP 3:
Scan top 100 ports of the hosts using SYN scan. STEP 4: Perform version and OS detection
STEP 5:
List the hosts whose 22/SSH, 3389/RDP and 80/HTTP services are open. Let me give you a hint.
Some Linux commands will help you in the second and fifth step.