You can learn Big Data Analytics by enrolling in a paid online training course from a recognized learning partner. Here industry experts teach you the essential concepts in Big Data Analytics and mentor you to succeed in the domain. You will also receive industry-grade course materials, assignments, and projects that will help you get a good grasp of the concepts of this subject.
I will recommend you check out Certification in Big Data Analytics from E & ICT Academy IIT Guwahati in collaboration with IBM. Watch the below-posted video wherein a learner shares his learning experience with us.