In the AI Assistant Writing Course, I wasn't clear enough about how to view and edit markdown (.md) files (I will fix this ASAP). For those who experienced problems with these, @Kundan Jha shared a great markdown editor: https://stackedit.io/ You can import md files there and modify them as you wish by selecting "Import Markdown" from the right panel (my first screenshot). Then you can export them back to your computer and upload back to Claude Project Files. For those that prefer local editors, I highly recommend Obsidian: https://obsidian.md/ Hope this makes your life easier!