If you are transferring a Word user guide to ScreenSteps, you don't want to simply copy and paste your entire guide (100+ pages) into one ScreenSteps article. Follow these instructions for organizing your Word content into ScreenSteps.
The scope of this user guide is narrow, so it can be a ScreenSteps manual.
Create a chapter in ScreenSteps for each H1 heading.
Create articles in ScreenSteps for each H2 heading.
The scope of the Salesforce user guide is much broader (552 pages broader). So this guide will be a group in ScreenSteps.
Since the scope is quite large, each section becomes its own manual.
Create chapters for the sub-sections.
Each of these sub-sections cover a specific task, and should be articles in ScreenSteps.