All the posts on the site that explain Document Design principles and advice are listed below. Those in the Discussion Question column typically end with a question students might reply to in a discussion forum. Those in the Web Page column are simply informative, without the discussion prompt at the end.

Discussion Question Format Web Page Format
Adding Images to Your Text Adding Images to Your Text
  Avoid All Caps and Underlining
  Avoid These Common PowerPoint Errors
Centered Text Is Harder to Read Centered Text Is Harder to Read
Charting Data with Images Charting Data with Images
Choosing the Best Fonts Choosing the Best Fonts
Chunking Your Paragraphs into Readable Bites Chunking Your Paragraphs into Readable Bites
Convincing a Reader to Read Your Text  
F-Shaped Reading Pattern F-Shaped Reading Pattern
Information Rich Signposts Help Readers Information Rich Signposts Help Readers
Informative Headings Help Readers Using Strong Phrasing in Your Headings
Lists Make Instructions More Readable Lists Make Instructions More Readable
  Professional Design for Correspondence
  Professional Design for ePosters
  Professional Design for Reports
  Professional Design for SlideShows
Professional Design for Tables
Put CRAP in Your Document Design Put CRAP in Your Document Design
  Use Consistent Formatting