None are really needed. Run the app.
There are entries for each Patch called Files=, Notes=, and Pictures=. If any of these doesn't say None then double click it (if you hover the mouse over those entries a tooltip will display). This is my way of conveying the needed information for each patch.
The app is a modern windows app with context menus (right click on items and if they have options a context menu will pop up) and tooltips (hover mouse over items and if they have a tooltip it will display).
Many people have used the app and have had no problems with it. I don't understand why you are having the issues you are having
The extra folders are for the app. All you need to do is run the app.