Hey there, Georgiegirl,
A critical concern is that you're using trial software. See if it will even let you print? Usually it will let you create content for screen use but not output actual files.
Or it will, with a dreadful watermark. Useful for learning but not for real-time work, especially under a weekend deadline!
In the meantime, please do check out InDesign's Long document features section on the Adobe website.
Creating book files
Creating a table of contents
Creating an index
Working with markers
(They also include offsite links to a long documents video and a lesson from the "Classroom in a Book" series.)
I would set up an InDesign template with master pages (with headers and footers) and style sheets. I'd use the template to create each chapter as a unique document, then compile them into an InDesign "book file." From there you can generate the TOC by selecting which styles you want tagged for inclusion. This allows you to maintain a high level of control over local pagination as well as overall book assembly.
There are a host of reasons why I would not choose MS Word for this particular project the way you've described it so far... Suffice it to say I've worked as a graphic designer and production manager in print publishing for the last 20 years (including textbooks and medical/technical user manuals), and prior to that as an executive assistant who's all too familiar with MS typing software masquerading as a professional publishing toolbox.
My 2¢ and best regards,
~Sue