To prepare your document for reading off a teleprompter, make sure your font size is at least 16px, as it will need to be legible from afar.

To print your document for the teleprompter, screengrab the copy from word or textedit or your emails, open photoshop, create a new A4 document, and paste your screenshot there. Scale your screengrab up to fit, and flip the image vertically by pressing this button: