How do I edit units and convert existing pages or posts into units?

To edit a unit:

1. Navigate to WP Courseware→Course Units
2. Find the course unit you'd like to edit and click on the unit title 
3. Edit and or modify the unit and click the update button

To convert a page or post into a unit:

1. Navigate to Posts→All Posts or Pages→All Pages
2. Find the post or page in the list and click on the title
3. On the lower right hand side you will notice a metabox title Convert Post(or Page) to Course Unit, click on the hyperlink to convert it to a course unit
4. Now you can navigate to Course Units→Course Units and find the page or post you just converted