Not yet (though we're hoping to create some soon)!
If you need help with using Dabble, https://help.dabblewriter.com/ is the place to start.
If you are wanting reviews, you can find videos at https://www.youtube.com/results?search_query=dabble+writer and blog post reviews online.
One customer posted this: https://www.expressobeansink.com/dabble-software-review recently.
Sally Britton has written over 10 novels in the past 3 years on Dabble and is making a full-time living with it. You can read her post on NaNoWriMo's blog here: https://blog.nanowrimo.org/post/179390856756/how-dabble-can-help-make-writing-easy
You can also ask around in the forums at https://forums.dabblewriter.com/.