If you are an assistant, you don't need to report to class. You learn PS to assist your existing work, and do some simple P-picture work, such as removing watermark, cropping the picture and changing the picture size. Then you really don't need to report for class. You can learn it by watching two sets of PS basic tutorials.

But if you study PS for creative work (such as designers or professional retouchers), you should not only learn PS software, but also learn professional knowledge in this field. As for whether to apply for classes, this is a matter of opinion. This should be decided by combining your study time plan, tuition budget and current working and living conditions.

But it is undeniable that no matter what knowledge and technology you learn, you must have good reference materials and learning materials as an aid. Otherwise, it must be very slow for you to feel for yourself just by your height.

Taking online courses is just one of the ways to learn. There are also online self-study tutorials, PS books and offline training. Only different learning methods have their own advantages and disadvantages. You need to weigh them and choose the one that suits you best.

Of course, when you choose these courses, books and training, it is normal for many novices to be cheated because of their lack of industry knowledge and professional knowledge.