Curated list of actually free AI courses (no hidden paywalls) - with time commitment for eac

I got tired of "free" courses that lock certificates or key content behind paywalls. So I went through the major platforms and put together a list of courses that are genuinely free to complete:                                                                                            1. Elements of AI at Univ. Helsinki - 6 hrs                                                   2. OpenAI Academy at OpenAI - 5 hrs                                                        3. Prompt Engineering at DeepLearning.AI \- 5 hrs                                            4. Salesforce AI at Trailhead - 5 hrs                                                         5. Google AI Essentials at Coursera - 10 hrs; Audit free, cert $49                                 6. Microsoft AI Fundamentals at MS Learn - 8 hrs; Content free, exam $165                          Full breakdown with what each covers: https://boredom-at-work.com/best-free-ai-courses/   What other free resources would you add? Always looking to expand the list.