It's best to listen to it for free at first, so don't worry about saving money. First of all, you should know what is going on in different training courses, which one is more suitable for you, and which one do you think is more clear after listening, and then you can choose the course that suits you.
Review should pay attention to a method, and we must master it well. The landlord might as well listen to the open class of intellectual property class, because it is free, so you can probably know that the teaching methods and review ideas are the same as yours. According to this, you can choose to apply for classes. Unless you have more money, don't buy classes blindly. reference data