You can go to the home economics training center, such as drinking fountains, range hoods, air conditioners, induction cookers, refrigerators, computers, televisions and other household appliances. Cleaning methods are different, some need to clean the inside, and some only need to use cleaning agents to clean the outside according to the operation. Use different household appliances.
You can also find a master to learn systematically in actual combat. You need to study at home every day to determine whether you are suitable for cleaning household appliances. Without actual combat, I don't know the real market.