The BBC are in the process of updating the guides for the new N5. What you see on the site at the moment is incomplete and is not yet suitable for use. It is anticipated that by the September weekend at the latest the site will be fully up to date. In the interim, it may be best to avoid the guides as at the moment they are a hybrid of the old and new courses and still contain some old and or incomplete content. Images and diagrams are also yet to be uploaded.
Once the guides are fully up to date I will post an update here.