How does learning a programming language on online platforms like Udemy compare to obtaining an official training certification from companies like Microsoft or Google?

On Udemy, you are taught by different kinds of experts. (40% of them know the language just by robbing basics, meaning they know it just by knowing it from others).

A very good example would be either not enough projects in a course or Lite boot camps that tend to teach you the language in 1–2 hours, and then you move on to advanced projects.

Udemy is still good and Udacity is also really approachable. Scaler works best if you want ultimate knowledge.

Above all, good internet research, books, and hands-on practice will get you jobs faster.