I want a small bot that I can fire up manually on my Windows machine whenever I enrol in a new online class. After I point it to the course URL, it should log in with my credentials, walk through the syllabus, pull every lecture video, and store the files locally in folders that mirror the course structure. For now, a command-line script is perfect—no need for a full GUI. As long as it installs easily on Windows 10/11 and all dependencies are open-source, I’m happy whether you choose Python, Node, or .NET. I often switch between Coursera, Udemy, and Khan Academy, so please build the downloader in a modular way: we can start with one provider and leave hooks for the others. Deliverables • Well-commented source code • Any helper scripts or installers needed for Windows • A concise README showing how to run the bot manually I’ll consider the job complete when the bot downloads an entire test course, keeps the lecture order intact, and every saved video plays offline without hiccups.