Posting course content is a very common use of Blackboard. Content items can include file attachments such as PDFs, Word documents, or PowerPoint slides, links to websites, etc.
To begin adding content, you'll need to first enter a content area, such as 'Learning Materials', 'Assessments' or one you have added yourself. One you're in a content area, you'll see the Action Bar along the top of the page.
On the Action Bar, point to Build Content to access the drop-down menu, as shown in the sample image.
From the menu, choose which content item type you would like to create.
The most commonly used are Item (which allows you to include an attachment and a description), File (which links directly to a file attachment only), and Web Link. You can also create Content Folders or Module Pages to help organize your course/section materials (by topic, or week, or into collections of related materials, assessments, or lecture notes/slides).
Once you've chosen the appropriate content type, you'll be prompted to enter various details, such as the name of the content and a description; add relevant attachments; and set whether users may view the content, whether you wish to track the number of views, and set time and date restrictions. Click the Submit button to finish adding your content.
Learn more about the Blackboard Content Editor: