Your first order of business is to sort out Normal.dot. If the default font, view, and margins aren't to your liking in Normal.dot, they won't be in any documents based on it either which means all documents that you don't specifically base on another template.
Next up are direct formatting tips, numbering woes, and advice on using Word's styles. Formatting is easy to apply in moderation but can quickly become confusing, especially when Word starts switching the language on you without warning. Automatic numbered lists can be a great time-saver when they work. Styles can save you even more time, provided that you know how to create them, apply them effectively, and deal with their quirks.
The second half of the tutorial grapples with placing graphics where you want them (and making sure they don't get deleted by accident), controlling Word's enthusiasm for creating hyperlinks, using tabs correctly, and creating complex headers and footers.