Easy And Fun Online Learning
My current favorite place to learn online (besides WA) is https://edu.gcfglobal.org/en/
Basically, this website covers the basics about a number of things. For example, there's a course on "Email." If you're like me, you'll find that even though the topic may be basic and cover the fundamentals, you don't actually know all the fundamentals.
You'll also find courses on non-basic things such as "wearable technology": https://edu.gcfglobal.org/en/wearables/ I haven't gone through this course yet, but if it's like the other couple of courses I've done on this website, the course covers the fundamentals and, although it's not an advanced course on the topic, it will give you what you need to know.