I haven't been able to find any information if a study group or similar might be available for learning Vex. I'm thinking that working with a small group of beginners might be helpful in learning Vex - as well as other topics in Houdini. Despite its potential for helping the code-challenged to get peer support and encouragement - it doesn't seem to be a thing with learning Houdini or CGI in general that I've ever seen. I get that with many areas in Houdini you can probably teach yourself on your own - but something like Vex - being able to ask questions and solve problems with others who are on similar levels of skill could be quite valuable and help people with sticking with it. Anyone interested?

“Think Procedural” Discord (https://discord.gg/b8U5Hdy) group has a VEX dedicated thread where conversations happen. Might be a start for you to connect with people there. Otherwise you could start up a Discord or Slack for that pretty easily enough if you wanted a smaller specific group.

“but something like Vex - being able to ask questions and solve problems with others who are on similar levels of skill could be quite valuable and help people with sticking with it. Anyone interested?”

You have a good idea…but don't let that stop you from getting into it right away. You might be surprised that it won't take too long to get very good/use to working with vex.

Go ahead and start exploratory examples/projects and post your hip with your questions here. Besides getting feedback for yourself, you will be helping others who may be having the same questions now and in the future(through forum searches).