1. Usually it's not needed, but if you want to be sure files will be transferred with correct mode especially if connected to server running on Windows, type "bin" to get binary mode on.
Then navigate to correct direcotory on ftp site with "cd" and "dir" commands. To download file type "get filename".
It will be downloaded to your local current directory. To change current directory use "lcd" command. You can also go to current directory first before running the ncftp.
If you want to download multiple files at once, type "mget fil*" and you get all files starting with "fil".
2. Not that easy way. It's designed to be runned from floppy or similar non permanent media. I'd recommend to install full TCP/IP stack to your HD for permanent use. Of course nothing is impossible and you could copy needed files from installed disk to your HD and merge changes in startup files and env variables to your system... but never try to run config script after it. Hmm.. there could be idea to make it installable in future version afterall..