Websites to do free online courses and earn certification in IT field

Know the best websites where you can learn online and get certification for courses. Make your stay at home productive and learn new skills while sitting right at home.

Novel Corona virus has spread over world at high rates because of which school, colleges, work place, shopping malls and many other places where people are expected to gather are closed and requested to stay at home. "Work from home" strategy is been applied in India. I am a college student currently pressuring my graduation in BE CSE, I would like to know some best websites to do some good computer science related courses in free which could help me in my placements.