Accessible Documents & Presentations

Make your Word Documents Accessible (Word support site for Windows, Mac, and more)
Creating Accessible Documents in Microsoft Word (WebAim techniques)
PowerPoint Accessibility  (WebAim)

Captioned Videos

Adding Your Own Subtitles & Captions to YouTube (Google Support Page)

Describing Images

Alternative Text Overview (WebAim)

Other

California State University Accessible Technology Initiative (Faculty Information)