For self-learning Data Science there are various resources available like online tutorials, e-books, pdfs, articles, and so on. But learning through e-books, pdf doesn’t provide you with practical knowledge. I rather suggest you go for online videos by experts who can help you in understanding the concepts in-depth. For that, I would like you to watch this video -
This video helps you with basic concepts of Data Science not just through theoretical concepts but also by providing hands-on projects and case studies. Upon completion of this one can gain the utmost confidence in getting into the Data Science field.