How do I link to other pages on menu?

If they are not published, you won’t be able to link to them.

Thanks.

Ok, in “view” mode I can jump from page to page from the menu. But if I enter the address of https://early1900photos.com/ I get the “Hello World” page. I don’t even have that in my dashboard.
Is there a way to not have urls like https://early1900photos.com/?page_id=5 but instead have https://early1900photos.com/gallery?

That is set via Settings->Permalinks. Any of the non-default permalink structures will give you pages with the page name instead of the ID.

If you don’t want your blog posts to show on the home page, you need to create a page that you do want to display there, then under Settings->Reading-Front Page Displays: a static page, and then select the page you created that you want to display there from the dropdown.

Hello World is the default post created by WordPress on installation. Most themes are configured to display posts on the home page out of the box.

Ok, I got my menu working AS DESIRED. Please explain why URLs are https:// instead of www. For the last few years I was under the impression that https:// is not needed to access a page since it is assumed that all www sites start with https:// unless otherwise specified.

You have it backwards. https:// is needed. www is not.

What I mean is that I can go to nearly any website that I have ever gone to by typing https://www.—– and when the website pops up the url may contain http but it also contains www. When I go to a wordpress page the www disappears. This is not the usual happening. I though all website contained www becuase it stands for world wide web.
Not trying to argue, just understand.

When I go to a wordpress page the www disappears.

www is now superfluous. On many WP sites, it may be that site owners are opting to use bare urls (no www). Some also automatically redirect all calls to https://www.example.com to domain.com.

This is not the usual happening.

It’s far more common than it used to be and usage is increasing all of the time.

I though all website contained www becuase it stands for world wide web.

www does indeed stand for World Wide Web but machines (computers) don’t care about this. All they want to know is what connection protocol to use – e.g ftp or http – to access a given resource.

All http connections point to Web resources.

Thank you. I think I can get past that now.
See y’all soon with more questions ??