These awareness courses are short, simple, free introductory courses. After you subscribe to one of them, one lesson will be emailed to you every day, which takes you only a few minutes to read. Most learners use their otherwise wasted time (eg. on the way to work) to read the lessons. Without spending much effort, you will have a very high-level understanding of the topic in 4 to 6 weeks.
We recommend taking these courses one at a time.