Information collection is the key.
On the road of self-study, information is king. Don't expect someone to tell you how to go every step, take the initiative to find it yourself. Including registration, purchasing materials, preparing for exams, etc. Be sure to pay attention. Official website's information in the Education Examinations Institute may not be easy to find, so be patient and careful.
Conquer English and Mathematics
English is a compulsory subject, and mathematics involves science and engineering, economy and finance. If you think these two subjects are difficult, you can choose a major that doesn't take math. As long as you put your heart into it, you can understand ordinary textbooks.
Persistence is very important.
It's a long way to take the self-study exam, and it's not easy to stick to it. But as long as there is a dream in your heart, what is the difficulty?