Most visitors scroll through about half of an article page. Less than 20% of the text content is read. Concise, scannable text results in more content getting read and understood.
To make pages more scannable, use:
- bullets for lists of things
- subheadings to divide the content into parts
- the inverted pyramid: put the most important and general information at the top; the text should gradually get less important and more detailed as you go down
How Users Read on the Web by Jakob Neilsen