Recently installed nmap but I don't know how to use it. I found the documentation, but I'd rather not have to leave the command line every time I try to learn something new with it. I'm still working through a book on Linux so I apologize if this is an easy thing to do.
You can use
man nmap to read manual of nmap. If you want to read some other documentation outside of manual files, you can save the documentation as text file and
less it in console to read it.