If you are a college student, you must pass the training course, because you have not graduated and have no work experience, so you must go through the training and study in the training center before you can apply for the third level of human resources.
If you don't plan to go to a training school, you can wait until you get your diploma before applying to the local labor bureau. You only need to prepare two copies of your ID card, two copies of your diploma, five two-inch color photos, a national unified registration form, and an examination fee. About two months before the exam.
Good luck!