You can download free, pre-built document templates with useful and creative themes (for Microsoft Office Word, Excel, and PowerPoint) from office.com. Templates can include calendars, business cards, letters, cards, newsletters, resumes, and much more!
Use a template you download as-is, or you can customize it to meet your needs. Office Online is a great resource for all kinds of free downloadable content.
To learn how to download and save a template, watch the following demo:
Additional Resources