Awesome! I don't use VSCode anymore, nor do I really watch tutorials, but when I was starting out as a programmer I would have loved to have something like this. Best of luck with the launch!
I'm hoping CodeMic will be more than tutorials and in more places than VSCode.
For example, I have a passing interest in compilers and would love to see a tour of say LuaJIT by an expert, to see its general architecture or a deep dive into some specific corner of it. Not really a tutorial, but a guided exploration.