There are two common methods for creating course content in Brightspace. You can use the "Upload File" tool to allow students to view common documents such as .docx, .pdf, or .pptx within Brightspace directly. The other option is to use "Create a File" which wouldn't allow students to view these in Brightspace directly and would require them to download the files to view them. However, the "Create a File" tool gives you access to robust text editing in Brightspace.
This video demonstrates the difference between the "Upload File" tool and the "Create a File" tool.
The associated support ticket form covers all types of BrightSpace requests.