Pub might have a slightly different way of doing this but here's the
basic idea.

Create a Master Page, or in Pub's case, a page that has all the items
you want on each page - sort of like a template. Give that file a name
like Main (for lack of a better, more descriptive one!). Pub all you
main pages in it.

For my example, I'm going to pick a used car dealer, who sells almost
new to well used vehicles. His main file has the info such as location,
reputation, way of doing business, if he takes weekly or bi-weekly
payments - things that apply to every car.

Now, our car dealer is a super-big one. He has dozens of different makes
and hundreds of models. So he would create sub-folders on his web site -
Ford, Chevy, Toyota, Kia, etc. He would also create a new file for each
make and call them something like Ford, Chevy, Toyota. Under Ford, his
pages would have different models, along with images or whatever. Same
with all the other makes.

On his Main page, he would have a link. This is the only thing that
takes more work. When creating a hyperlink, instead of choosing a page
in your site, you will need to pick An Internet Page (if Pub gives that
option) and type in the path. Say your web site is called
www.supercardealer.com. The link to the Fords would be
www.supercardealer.com/ford/ If you want a link back to your Home Page,
you would have to create the link - to an Internet Page and type in
www.supercardeal.com/ Same thing for links to other makes.

Why go through this trouble? If your site get huge, over 100 pages (or
maybe 50, if they are heavy with images, JS, etc., making a simple
update takes too long. Saving a 100 page site takes a lot longer than
saving a 25-page one. And heaven forbid, it the file ever becomes
corrupt, you have not lost 100 pages of work, only the ones in that one
file.

One last step - download the free version of Zoom Search from
www.wrensoft.com. Okay, I'm not affiliated with the company and I don't
make any money recommending it. But it's a darn good program, doesn't
have any ads, doesn't search the Internet and take people away from your
site and has lots of other goodies. Use it to index your entire site (it
will follow any links on your pages. Thus, if someone is looking for a
1992 Ford Taurus with less than a gazillion miles on it, if you have one
in your site, it will provide a link. The only thing is the free version
is limited to 50 pages (I think), but you can upgrade to 100 pages for
$50 if you wish. The paid version will also index any pdf, Excel or Word
documents in your site.

Though this example is for a car dealer, it applies to lots of sites
that have what could be called branches. I publish a weekly paper, so I
use subfolders and different files based on issues.

One other thing before I get off this platform and go water some plants
- upload your files to your server. but before you do that, close them
and reopen them. If they open, then upload them. That way, if your HD
crashes and burns or some other major catastrophe happens, you won't
lose a beat. Download the file and go back to work.

Hope this helps, but if it doesn't make sense, type back.

Mike