1) The document discusses best practices for visual design of instructional materials, including using typefaces that are familiar and legible to readers, increasing line spacing and white space on pages, and only including graphics that serve an instructional purpose.
2) Effective visual design improves reader motivation, comprehension, recall and reading efficiency according to research cited.
3) Typography considerations include choosing common fonts, increasing size, and avoiding issues with letters that are easily confused for less skilled readers. Page layout recommendations focus on organizing text with lines and shapes and leaving generous margins.