Data Science and Machine Learning both are branches of the same tree. So, it completely depends upon your interest that you want to specifically become a Machine Learning Engineer or a Data Scientist.
So, if you want to begin with Data Science and Machine Learning then you can go through:
Also, if you want to learn Data Science and Machine Learning thoroughly from the beginning then you must watch the following tutorial:
Data Science
Machine Learning
For getting a job as a Data Scientist you should be a professional in Data Science and you need to have a certificate for proving it, so, you should go for Data Science online course to make your career rise to the next level.
On the other hand, if you are interested in Machine learning and want to build your career as a Machine Learning Engineer, then you can go through this Machine Learning course.