Seeking Xero Online Training Resources

I'm looking for any online training resources for the Xero platform.

• There are the introductory courses on the Xero Website, however I'm after something a little more advanced.

There's also videos at YouTube. I couldn't find anything at:

• LinkedIn Learning
• PluralSight
• Coursera

Seeking tips for any other online learning sources that might have content on Xero.