If the basic knowledge is not good, it is recommended to sign up for a training class. It takes time for a person to study, and it will be much better to have a teacher answer many questions. If you have a good foundation and strong learning ability, you don't need to report to class.

For candidates preparing for the exam, choosing a better training institution is also an important factor in passing the exam. Choosing a training institution can be considered from the following aspects:

1. Choose a training institution with large scale and long training experience.

2. The teachers of the course have strong professional background and rich training experience.

3. The course content should be advanced and the learning process at each stage should be grasped.

Of course, after-sales service is very important. There will be many problems in the learning process, and teachers must answer them.