Hello Betsy, I have never heard of any kind of limit on the number of pages in a book. However, once a book gets too big it’s harder to find a good binding to hold it together, and it’s harder to pick the book up. If you’re thinking of anything longer than maybe 3000 pages, you should talk with a printer about proper binding, good thin paper, etc. to make it usable. And consider dividing it all into separate volumes.
There are three settings we need to embed in this field. The first is to tell it what kind of numbering we want to do (in this case, “First, Second, Third”), what case we want to use (upper case, title case, etc.), and a switch to tell Microsoft Word to increment the numbers. Click each of these settings as shown below, being sure to click Add to Field after each one:

Numbering and Section options are available in the Pages Panel menu. These options allow you to define what page starts a section and how it should be numbered. A Current Page Number marker must be set on pages in order to use this feature. The Current Page Number is a special character inserted in a text frame on a page or master page (recommended) where the page number will appear, by selecting Type>Insert Special Character>Markers>Current Page Number.
Select the text frame with the Selection Tool (V, Escape) and go to Edit > Copy and Edit > Paste. Manoeuvre this second text frame onto the left-hand page in a mirrored position. InDesign will provide pop-up guidelines once the text frame lines up exactly with the frame on the right-hand page. Once your happy with the positioning, select the Type Tool (T) and adjust the orientation of the text to Align Left from the Character Formatting Controls panel, as before.
When the “Current Page Number” placeholder sits on a master page, every page to which you assigned that specific master page will display this variable – the number will change automatically on every page. If you change the style assigned to the placeholder on the master page (let’s say you set it to bold), all page numbers will update to that style (all numbers will become bold).

Although there is a built-in Document Property called Revision Number (which you can see if you select File + Properties + Statistics, this is of no use, because it is incremented every time the document is saved. From a Quality perspective, the document revision number (we'll call it the version number from now on to distinguish it from the thing that gets incremented on each save) should be incremented each time a document is redistributed, and not each time it is saved (it could be saved many times during a single editing session).
The steps in this article are going to show you how to add page numbers to the pages of your Publisher document. The page number will appear on every page of your document, at the location that you choose. Note that page numbers will also be included on any new pages that you add after inserting the page numbers, and they will update automatically if you delete any of the existing pages from the document.
InDesign is a popular publishing software application released by Adobe. It is often used by graphic designers to publish books, magazines and brochures. Along with important elements like text, graphics and logos, page numbers are essential to these publications. It is possible to add the page numbers during or after the document's completion, if you know where to look. This article will tell you how to add page numbers in InDesign.
One solution is to format the heading with the style and follow it with a hidden paragraph mark. You should format the text in the next paragraph with a style that is not included in the Table of Contents. A hidden paragraph mark keeps the text together on one line when it is printed, even though it is actually two separate paragraphs. The Table of Contents command picks up only those paragraphs with heading styles and places them into the Table of Contents.
In summary, paragraph numbering is really just an exercise in logic, and this blog post is showing the numbering styles for a very specific project. Your project may be similar, but not exactly the same. You just need to think though the levels and how you want to restart the numbers. I do my best to think it through correctly the first time, set it up, and then try as hard as I can to break it, so that I can find my errors. The good news is that once you get your numbers working, you shouldn’t ever have to think about it again.

Over the last few months, we've reviewed Word's numbered list features. Specifically, How to control spacing and alignment in a numbered list in Microsoft Word shows how to control spacing and alignment and How to number headings in a Word 2016 document shows a simple way to number headings. In this article, we'll continue by reviewing Word's Multilevel List feature. Fortunately, it's easier to implement and modify than you might think.

You can't use Word's Numbering feature to generate a multilevel numbering system, even if you use built-in heading styles. Figure A shows a document with two styled heading levels: Heading 1 and Heading 2. You can apply the Numbering option (in the Paragraph group) and Word will number the headings consequently, but the feature ignores different levels; if you expected 1, 1.1, 2, 2.1, and 2.2, you might be surprised. If you select the entire document first, Numbering not only ignores the different levels, but it also numbers the paragraphs!
Let's say you just created a paragraph in Heading 1 style. Now, you press Enter to go on to create the next paragraph. What style will that paragraph be in? You can modify a style to stipulate the style Word uses for the following paragraph. So you could set it up so that, when you're entering text, a Heading 1 will be followed by a Heading 2. And, you could set it up so that a paragraph in Heading 2 will be followed by a paragraph in style Body Text.
It's also possible to consecutively number list items in InDesign. Create a text frame for your list and click the numbered list button to insert a list. Type your list items, pressing your "Enter" key between items. InDesign consecutively numbers the list automatically; you can change the number it begins with and the style of the numerals. Press your "Alt" key (Windows) or "Option" key (Mac OS) while clicking on the numbered list button to open a dialog where you can modify those options.

Creating Long Documents with InDesign shows designers how to plan, create, and output book-length documents using InDesign CC features and third-party plugins. Publishing veteran Mike Rankin focuses on long-document elements such as page and chapter numbering, tables of contents, cross-references, and indexes. The course also provides strategies and best practices for document construction, from creating master pages and applying consistent formatting with styles, to placing text and images and outputting to both print and interactive PDF.
Almost everything I learned about Word's numbering I learned from the Word newsgroups (especially the Microsoft Word Numbering newsgroup) and from the MS Word MVP FAQ site. The contributions of John McGhie (especially his article about Word's Numbering Explained on the MS Word MVP FAQ site) and Dave Rado are significant. The current page represents a mere summary and application of some of that work.
Changing the numbering display affects how pages are indicated in the InDesign document, as in the Pages panel and in the page box at the bottom of a document window. The numbering display also affects how you specify page ranges when printing and exporting the document. However, the numbering display does not change the appearance of page numbers on document pages.
CK Note: Word 2007 - 2013 interface has an different automatic numbering scheme which I have been told is much less subject to corruption. Microsoft Word 2010 Bible by Herb Tyson, MVP. However numbering is still very imperfect in these later versions. I still recommend following Shauna Kelly's step-by-step instructions (see above) if setting up numbering in a template or in a document likely to be heavily edited. If you start without doing this and end up with "spaghetti numbering," fixing it will be a very large chore!