Viewing multiple documents as one

Good morning! I have a document that has individual sections requiring update periodically. As a result, it has been split into 9 separate documents so that it doesn't all have to be trained on when there is a single change.
What I would like to do (if possible), would be to add a command button that would open the documents in order on one screen so that as the user scrolls, they can see all 9 documents. I don't want any changes that can be made to the document while viewing in this manner. It could be in a userform, or open a separate document that shows everything as a single document, etc. I just don't know the best approach to this.
Any ideas?

What you need is Word's Master Document facility. The only trouble is that it is historically unreliable and I would not recommend it. Used with caution it should achieve what you require and there are plenty of on-line references that explain its use.