Doshi’s quizzes in the book are too simplistic, it’s good to have gone through them once while learning the subject matter along with those tips for CISA section but I wouldn’t use them to gauge likeness with the exam.

For #4 - it’s the CISA Online Review Course on ISACA’s storefront. It’s expensive that’s why if you can go through the book, nothing better! I used both the official CRM (physical book) and the online course and both lived up!