Hi,
While I also agree there are other ways than printing out man pages, we can still help.
I will give you the example for the man page for ntop, you just change it to whatever you want.
man ntop | col -b | lp
"man" formats the text with Ctrl-H backspaces and multiple letters to make bold text. That will bork your print job, thus the piping through col -b , then pipe to you printer .
If you want to turn it to text and NOT print or print it later, you could do this
man ntop | col -b > ntop_man_page.txt
for saving paper you should look into the program "screen" or maybe your getting hung up with one terminal, or you could log in multiple times.
<edit> one more thing , just in case you're not familiar with piping, the "pipe" | is shift+\ ( the one above the enter key on US qwerty keyboards) also look into newbielink:http://www.manpages.info/ [nonactive] and The Linux Documentation Project newbielink:http://www.tldp.org/ [nonactive]
all at your fingertips, unless of course you're offline while working.