If you do maintenance on sites, then you're half-way there. Since you know
how to connect to the live site to edit a page (assuming you do connect to
the live site to do the editing of the sites).
in the same way you can start a new site, but you creating pages from
scratch. It's not a good idea to work live on the server in case it breaks
down - that would be your only copy of your work. What you need to do is
create a local site on your hard drive.
New site created by File > New > Site.
Then create new pages.
To publish, go File > Publish > Site. Enter the details as prompted (like
the web address to publish to - the HTTP address or FTP address, this info
is obtainable from the site owner (if not yourself) or the hosting company.
Once connected, click the Publish Site button in the right-bottom corner of
the publish screen. This will transfer files from your computer to the web
server.
You can also use FTP in FP or use a third party FTP program.
Look up "Publishing with Frontpage" in Google, for millions (literally) of
articles on how to publish with Frontpage.
You might find a book or two on the subject (e.g. on Amazon.com) or your
local bookshop. The author of "Frontpage Inside Out" is a frequent
contributor to this newsgroup.