Microsoft Equation helps you add fractions, exponents, integrals, and so on to Word documents. You start building an equation by opening Microsoft Equation:

You can navigate through open documents in a number of ways. One way to navigate through a document is to use the Document Map feature. The Document Map enables you to quickly jump to specific sections in your document in any view; it also serves as a quick reminder of your current location within the open document.

The Open dialog box,is your key to finding and retrieving Word documents.

You can modify subdocuments, but with features. This tip contains some of these features. You can modify subdocuments using the same tools that you have used to create a master document and subdocuments. This tip describes how to use those tools to modify subdocuments. How to create a master document, see The Master Document View, and Creating subdocuments for information about creating subdocuments.

Every master document consists of a normal document stuff and links to other documents. Those links can be used to pull in the information from the documents to which the master documented is linked.

Word master document enables you to: cross-reference items among several documents; create indexes, tables of contents, and lists that span several documents; easily assign consistent page numbering, headers, and other formatting across multiple documents; etc.
A book is ideally suited to the master document feature. Each chapter can be a subdocument, and the elements common to the entire book can be contained in the master document itself.

If you choose to use the grammar checker rather than turn it off completely, tell it which grammar items you want it to check and which you don't.

By default, Word makes objects snap (jump) to an underlying grid laid across the document. If you drag an object, such as a shape, you'll notice that it moves in little jerks rather than smoothly. This is because of the grid - but because the grid is normally invisible, it's not obvious.

Word borrows Excel's charting capabilities, which gives you plenty of power to create attractive and convincing charts.

If you work with several objects and have to move them or apply shared formatting to them, you must select these objects every time. Apply formal grouping and you will be able to operate those objects quickly as a unit.