1. Strive for clear and accurate headings and link descriptions. Use link phrases that are succinct and that make sense when read out of context or as part of a series of links (some users browse by jumping from link to link and listening only to link text). Use informative headings so that users can scan a page quickly for information rather than reading it in detail. 
2. State the topic of the sentence or paragraph at the beginning of the sentence or paragraph (i.e., front-loading). This helps those people skimming visually and those skimming with screen readers, which means jumping from heading to heading, or paragraph to paragraph and listening to enough words to determine whether the current chunk of information interests them.
3. Limit each paragraph to one main idea.
4. Avoid slang, jargon, and specialized meanings of familiar words, unless defined within your document. 
5. Favour words that are commonly used. For example, use "begin" rather than "commence" or use "try" rather than "endeavour". 
6. Use active rather than passive verbs. 
7. Avoid complex sentence structures.

1. A chart of complex data, such as sales figures of a business for the past fiscal year.
2. A translation of the text into a Sign Language movie clip. Sign Language is a very different language than spoken languages. Some people who communicate via American Sign Language are not able to read American English. 
3. Pre-recorded audio of music, spoken language, or sound effects may also help non-readers who can perceive audio presentations.

1. Navigation bar and buttons in the same location on each page.
2. Consistent colours, text styles, heading locations, graphics style, etc.
3. Consistently placed supplementary text (copyright, promotional, etc.), identifying images and other navigation or end-of page features.

[From WebAIM http://www.Webaim.org/tutorials/simple#14.3]