To make a booklet in Word without a template, go to Layout, select Orientation, and choose Landscape. Then, under Margins, select Custom Margins, choose Multiple Pages, and pick Book Fold.

The site has two-panel and three-panel brochure designs, as well as 4-, 8-, and 12-page booklet templates. Each design template costs $69, but you can try out a design for free before you purchase it.