Hi @dean1962 and welcome to the forum.
Sorry for the frustration. When you refer to the “notes” are you talking about one of the L1 courses, or something else? There is this page from the L1-DS slides that you may be referring to:
Generally, you can search for workflows on the Hub by their title. So if you type “String Manipulation, Math Formula, and Rule Engine Example” into the Hub search bar it should direct you here:
The page looks a little different from what’s shown in the slide, since we have updated the Hub. But to download the workflow, click on the cloud icon on the top right:
If you are referring to a different workflow, let me know and I can help you find it.