1. Training institutions: You can choose some professional dry cleaning technology training institutions, which will provide comprehensive courses, including the use of dry cleaning machines, the formula of dry cleaning agents, the classification and pretreatment of clothes, etc.

2. Vocational schools or technical schools: Some vocational schools or technical schools also provide training courses on dry cleaning technology. These courses are systematic, and you can learn professional knowledge and skills.

3. Online learning: There are also some online platforms that provide training courses on dry cleaning technology. This learning method is very flexible, and you can study according to your own schedule.

4. Online learning: There are also some online platforms that provide training courses on dry cleaning technology. This learning method is very flexible, and you can study according to your own schedule.

5. Find experienced masters or practitioners to learn: You can find some masters or practitioners who have many years of experience in the dry cleaning industry and ask them for advice.

6. Self-study and practice: Have certain self-study ability and practical ability, and you can also learn dry cleaning technology by yourself.