There are plenty of resources available on the market to learn digital analytics, like e-books, articles, pdfs, online video tutorials, and so on. But I suggest you go with online video tutorials by experts for a better understanding of concepts. For that, I would like you to watch this video provided by Intellipaat -
If you want to become a certified professional in this field, I would recommend that you take up Intellipaat Advanced Certification in Digital Marketing and Analytics which is specially designed in collaboration with CCE IIT Madras. Grab this opportunity to learn from subject matter experts.