Help with CC Libraries - Totally Confused

Hi There, never had a need for Libraries in the past, so sorry if this is easy...

1. How do you add Adobe fonts?

• I can drag text but this seems to create a style
• How do you add a font from the Adobe library?
• Also, I don't see a + button on the Libraries panel as seen in tutorials and help docs - is this normal or an indication something is wrong?

2. Why can't .ai files be added to Illustrator documents?

• I have an Illustrator file open but some ai files in the library are greyed out
• When I hover over the file, it's clearly an .ai file (see attached) but says it's unsupported
• If I try to drag the file onto the page, I see a green + but nothing happens
• These are .ai files from our logo library which open from the finder, so unsure what's happening

• Exact same issue in InDesign, can't drag it to a page as it's not supported...

3. Why isn't the in-app structure/organisation mirrored on the Adobe website?

• I've spent a LOT of time organising the library so it makes sense to non-designers
• This organisation displays in the CC Libraries panel in Illustrator and InDesign
• It also displays correctly in the Creatiove Cloud app
• But when viewing on the Adobe website, none of the logo, icon and asset organisation displays
• Everything just shows up as 'Graphics' which is obviously painful/frustrating

4. Why does the structure/organisation not display correctly in Adobe Express?

• Some of the structure displays
• But none of the colours display
• Niether do any of the fonts

There's certainly plenty of frustration about CC Libraries in the forums - are they not ready for serious work or something?

I hope that all makes sense, any help or pointers in the right direction would be much appreciated.

Cheers, Ben