There is no distinction between good and bad self-taught institutions, and there is no question of whether they are reliable or not. The key lies in the examinee's own efforts. As long as the review method is well grasped, there is no problem in passing the exam.

Self-study exam review method:

1. Download the papers and exam outlines of the past years online and find the answers in the textbooks. Because the self-taught test questions come from the question bank, they are often tested repeatedly. As long as these questions are memorized, it is no problem to pass them generally.

2. Review according to the outline, remember and master the key points, and you can get good grades.

3. When taking the exam, you should interpret nouns as short answer questions, and write out what you can remember as long as the test paper allows.

4. The topic of the self-taught exam is very wide, but it is not difficult, so there are many things to remember.