I recommend starting with the mini mock exams first and taking them throughout your studying process. For example, study Domain A and then take the Domain A Mini Mock and see how you performed. Use the feedback to guide additional study. If you scored poorly or didn’t understand some concepts, then go back and re-study those before moving on to the next domain. Then study Domain B and take the Domain B Mini Mock, etc.  I recommend taking a full mock exam AFTER spending time studying all the material in the task list so you can practice your time management and test-taking strategies.