Ron, typically what I do is what I did in the previous reply. if you start typing with the @ then pause a few seconds so it can populate the list, start typing the name of the place you want, like I did with the ArcGIS Open Data site above. The list changes (filters) as you type, but sometimes it has a slight delay, so check what you are typing.
My mention of the "duplicate" seems to have been deleted already. If that is the case, you probably want to keep this one (I can modify my comment about the dupe). This thread still may be better in the open data group, and check out Moving Content on how to move a thread. If it is still there, you can delete this thread.
It does take a while to get comfortable with geonet. To see the full structure, GeoNet Community Structure (which can always be found on the main page. My attempt to help users get started on geonet (big old, but might be helpful) Tips for Getting Started on GeoNet (general and Alaska User Group specific)
I hope this helps with the geonet side. I wish I could answer your question about the metadata, but I'm just getting started with OpenData, so haven't had a chance to test metadata.