Hello Gillian,
This article will help you to set correct base settings for the WPBakery – https://xstore.helpscoutdocs.com/article/101-wpbakery-page-builder
Then go Dashboard > Pages > edit page – http://prntscr.com/sa2hwl > change content using WPBakery Page Builder http://prntscr.com/sa2i8k http://prntscr.com/sa2ifj
Here are videos – https://wpbakery.com/video-tutorials/?q=%2Fvideo-tutorials%2F&v=9025a1ae8c64
Regards