You can print either by fitting the whole map into one page, or by printing the map to several sheets of paper. You can set this choice in the File menu, under Page Setup.
Choosing the landscape option usually looks better and makes better use of space.
If you want to preview your map before you print it and have a PostScript printer or generic PostScript driver, you can print the map into a file and view the PostScript file view with Ghostview or similar software.
Beware that if you try to print to a file with a printer that does not understand PostScript, the resulting file will not be PostsSript but probably PCL, which is unusable for you.
You can also print from your browser after exporting a map to HTML, or from Word or Wordpad after copying and pasting the map into it. You can also export the map into HTML with headings, copy and paste it into MS Word and print it from there. That way you can change styles as you want.