Since online courses can be distributed and accessed throughout the world, it is a good practice to create courses that are easy to understand to a wide rang of people.
Use a tone that is factual, professional, and straightforward, but still friendly and inviting.
Sentence structure should be varied to keep users interested.
Vocabulary should be understood by 80% of the population.
Avoid using slang or local expressions as much as possible.
Examples should be culturally sensitive, so that they work with an international audience. For example, prices and currencies vary by country. If a table of prices is provided, the region and currency for the prices should be clearly shown.
Not everyone has the same sense of humor. Unless you are a skilled humorist avoiding using humor or sarcasm.
Word usage should be consistent throughout the course. Punctuation, spelling, and grammar should be accurate.