Hi,
FYI, I've did a workshop with 35 attendees during the Pycon-FR 2016 about AsyncIO and aiohttp.web.
I used mainly
http://asyncio.readthedocs.io/ as course support.
I'm not a professional trainer, nevertheless, everybody seem to be happy.
My main advice is to ask at the beginning of the session the level of each attendee, and group by level.
Because, when you take a random Python developer in community, you can have somebody who has already play with the async pattern and AsyncIO, like (s)he has never read a piece of documentation about async pattern.
You can't have the same approach for both profiles. Ideally, to be 2 or 3 is a good idea, to animate each group.
The list of levels I've used:
1. I never use Python
2. I've rewritten Python scripts
3. I've already use Flask/Django
4. I've did async without AsyncIO
5. I've some troubles with AsyncIO
6. I'm here only to troll about AsyncIO
The latest group is more important than you think: It helps you to add some humor, and also to split advanced people with you can easily debate without to "pollute" the other groups who only want to learn AsyncIO and aiohttp.web.
Thanks for people who has assisted me during the workshop.
Have a nice day.
PS: If you have some tips and tricks to animate AsyncIO workshops, I'm interested in.