YouTube is a great resource for people aspiring to learn pretty much anything. There are countless numbers of topics covered by the broad range of tutorial videos, including Data Science and Machine Learning. Do check out the following video tutorial which will help you in mastering in both the fields
For Data Science:
For Machine Learning:
And if you are not from a programming background and want to learn more about Data Science then do refer the following video tutorial which is based on Data Science and Machine learning for non-programmers:
If you are looking for a Data Science project then also check out the following video tutorial which is based on projects and you will learn how to implement a book recommender system end to end:
Also, if you are keen to learn Data Science and want to become a certified Data Science expert, then check out Data Science online course.