How do I master the IB DP Economics HL curriculum?

I want to master the whole content when it comes to Economics HL in IB (year 1). I have a physical copy of a very well written book (the one in the image). “The Economics for the IB Diploma course book by Ellie Tragakes is a comprehensive, concept-based guide that provides clear theoretical explanations, HL-specific content, and a wide range of exam-style practice questions to help students master the 2022 syllabus.” I want to retain the full scope of the syllabus (models, diagrams, evaluation arguments) and be able to retrieve the info accurately under exam pressure. What techniques would you recommend for this kind of content-heavy, analytical subject?

Simplify the material to memorize. And study the difficult information with other systems more complex to retain that. The technical language is very important. I would study the two matters separately.