NCERT books are very engaging because of the numerous pictures and examples that are used. But studies prove that children find it easier to grab concepts when they listen or watch videos of those concepts. Many online platforms such as YouTube, Meritnation, Khan Academy, Byjus have interactive content that makes use of audio, diagrams, charts, and drawings to make it as interesting and interactive for students as they possibly can. When you watch these videos, your brain will retain information from it, more than it does from a regular textbook or class notes as motion renders the brain more effective in recalling.