Now TOEFL online courses are everywhere. Is it really reliable? Is Xue Tuofu's online course deceptive?

Each TOEFL online course has different characteristics, and the first different course here is very different and cannot be generalized. Whether online courses or face-to-face lectures, the most important core part: teachers. I only took the TOEFL online course of Wei Xue Education, and I think it's very good. There are dry goods and things summarized by the teacher himself. They have many audition classes, but when you listen, you will have a good or bad judgment in your heart.