If you sign up for the online class, it is still not recommended, because its advantages and disadvantages need to be weighed. Let's talk about its advantages first If there is no limit to the learning time of online courses, there is broadcasting (and then it is said that the adult studio now has free class time), there is no limit to the location, and then the cost is lower: then its limitations must be considered, and sometimes its advantages will become disadvantages. Let's just say that its cost is lower, in fact, because there is no local cost, and the cost is low because. Moreover, there is no sense of presence in online classes, and the communication feedback between teachers and students is not timely, so it is impossible to guide according to the actual situation of individuals!
Suggestion: study on the spot, be immersive, be targeted, give timely feedback, and learn efficiently.