I’ll explain how to upload them, how to embed them into your posts and pages, and what happens behind the scenes when you do that. We’ll also discuss Featured Images, the relationship between the “image” and “embed code”, and we’ll talk about the actual image sizes on the server.
The full course is aimed at beginners and medium casuals alike. Whether you’ve been away from WordPress for a while, or if you’re a complete newbie, this is a very un-intimidating “getting started” guide.