Yeah, don't follow other people's guides to get started. Just realize that org-mode has so many features (including Literate Programming) it's easy to get lost.
Just start by using it as an outliner, when your files get too big or you need to start keeping TODO lists, look into agenda views, then capture, then ... well you know.
Start as simple as possible, and when things break, or don't do what you need, spend 15 minutes and make them work.