Were you able to open the Syllabus on the last screen, a Word document? Online materials come in various formats. Each class will list the required software. Not all courses will use the same type of materials, but the most common ones are below. Open the links. If you don't have the software required, check the sources at the bottom of the page.
AFGE Strategic Plan Template
A Visual Story
Inequality for All
AFGE Store - Publications
Open the documents above. If you can't, you might need the following software.
PDF: Adobe Acrobat Reader
Flash: Adobe Flash Player
Word, PowerPoint, or Excel: Microsoft Office