i want to start machine learning course.
How is coursera's ML by Andrew Ng??
Is it good to start with that course or do u have any other suggestions??

I'd look towards Aurélien Géron's book on Machine Learning with Sci-kit / Tensorflow, as well as Machine Learning for Beginners (can't remember the author but same publisher)

I've had shit luck with Internet coaches when it comes to machine learning; probably due to the mythical buzzword status of the term.