1, TOEFL is valid for 2 years. However, some universities declare that they only accept TOEFL scores within one year, that is to say, for these universities, TOEFL is only valid for one year, and the specific plan should be seen by themselves. TOEFL is available every week, and I want to take it several times a year.

It is better to take the exam within 3 months after general training, depending on how many times you want to take the exam. But if you have a good English foundation, it is enough to apply for a listening skill.

Of course, I don't know anything else. Books issued by the Oriental Training Course can be returned if they are not opened. However, it's good that you can memorize TOEFL words before going to the training class. Leave the rest to the training class. After all, the TOEFL test is skillful, and blind self-study may be meaningless.