Flow hive courses

I’ve had a flowhive for over a year now. My bees are happy but I only really want to have one hive. As the bees continue to colonise I’m worried that they’ll out grow my hive. I’m wondering whether I put another flow super under the existing super...not sure what to do but I want to be prepared in advance and get my head around it as well as get the resources I’ll need. I’d love to do a bee keeping course but think I’m a bit beyond the introductory course. I looked at the course in April. Is there a specific flow hive course?? Will the April course cover flow hives? Any advice is welcome.