eadability is subjective and measures how much a reader wants to read or is enticed to read. The designer must explicitly think about inviting the reader into the text. How appealing is the text? What defines the readability of the text?
Text can be legible but not necessarily readable.
Guidelines:
eye needs relief - space and variation (e.g. use of drop caps - large capital letter at the beginning of a paragraph)
insert compelling quotes that can be lifted from the text and highlight with larger size and or colour
consider creating "entry points" where the readrer enters the text by visual cues (e.g. headlines, sidebars, etc. - think like a magazine designer)
chunking information - breaking information into bite-sized pieces (the author has used chunking to design pages and section of the text in this resource)
adding white-space for eye relief (notice the white-space around the outside of this page and between columns, etc.
ease of navigation (e.g. menus on a website)
predicable organization - consistency
"tag line" (catch phrase) can draw the reader in (notice the blocked in orange text in this resource)
L e t t e r s p a c i n g
Adding letter space to a title can help it fill the space and increase the sense of importance. Setting your type panoramically can make a bold statement.
Purpose
Readabilty invites the audience into the message of the text - it motivates the reader to continue processing the type message.
Hierarchy for chunking
Headers in larger size and bold with space and positioning can communicate logical sections and helps break up otherwise dense text copy. This not only makes it more logical but more approachable for reading as well. You want light copy not dense copy.
Contrast
Contrast of visual aspects of text copy can break up an otherwise dense text copy. Contrast in type faces can help communicate hierarchy and can be used to contrast meaning. This can add excitement. While consistency is important so is:
...surprise and difference, if used prudently.
Don't be timid in your use of type - be bold!
Dramatic use of type face can add zest to the message. However, take care not to fall into the trap of glitzomania.