Word lets you add a Work menu to your Menu Bar that you can use to access a few frequently used documents. The following site has pretty clear instructions to add it.

Add a Work Menu to Word

To add the Work menu to the menu bar:

1. Select Tools | Customize, and click the Commands tab.
2. In the list of Categories , select Built-in Menus.
3. Select Work in the Commands box and drag it to the menu bar.
4. Click Close to close the Customize dialog box.

After you add the Work menu, you can easily add any open Word document to it.

To add the current document to the Work menu:

1. Select Work | Add to Work Menu. (If the work menu is already "full" (9 documents on most versions), the bottom document will be pushed off and no longer be available from the Work menu.)

To open a document on the Work menu:

1. Select the the document on the Work menu.

To remove a document from the Work menu:

1. Press CTRL+ALT+- (minus). (Must use the minus on the main portion of the keyboard, above the letter P)
2. Your cursor will look like a large, bold minus sign.
3. On the Work menu, click the document you want to remove.

(Danger Will Robinson! Warning! This Control-Alt-minus can be used to remove items from any of the pull-down menus!)