First of all, if you don't apply for classes, you can buy some related professional books. After all, you can learn a lot of useful knowledge by reading carefully. Of course, I recommend the online course (after all, it is the University of Miley Miley). Many of the above teaching resources are still very good, there will be videos of the courses you need, and the teachers inside are also very good, most of them are professional teachers. Of course, you can sign up for the online class you like, or find a suitable class, which is more suitable and not too expensive.
Secondly, in fact, you need to establish correct values in your own exams. It doesn't mean that you can pass online courses and training courses at a high price. Individuals need to have a correct learning attitude, make a good study plan every day and finish it on time seriously in order to make progress. However, you can't believe what the staff who signed up for the training class said, and you can't give up your efforts by this marketing method. Therefore, it is recommended to keep your eyes open and get in touch with reliable training courses.
Finally, whether you apply for classes or not, whether the classes you apply for are guaranteed or not, you must work hard. I hope you can pass the exam. Come on!