Determine the local registration time first, and then register. After registration, download the exam outline from the self-study website and purchase the required teaching materials according to the outline. The most important thing about studying hard is that you will have a great chance to pass the exam after you stick to it.
There is no limit to the self-study exam. Anyone who doesn't have a primary school diploma can apply. Just use your ID card or household registration book (you don't need an ID card to register under 16) to register in the permanent residence examination office.