First of all: you can't find the point yourself, and you can't even fix the tour guide words yourself.
Second, do you know what to test? Reading without focus is very energy-consuming and time-consuming On the contrary, there is nothing you can do if you take the tour guide card.
Thirdly, if you are self-taught, you won't be exposed to some practical experience of taking a tour group, because the teachers who attend the training seminar are experienced tour guides, and he will tell you some experience of taking a tour group on the way to class, which is also very helpful for your future tour group.