If your education level is not very high, it is better to learn a pure technology that does not involve much knowledge. This way it will be easier to learn. After all, it is quite difficult to learn mathematics and English. For example, today's chefs are purely technical and do not need to learn other cultures. They only need to practice every day. People say that wherever there are people, there are chefs, because everyone needs to eat. You can see how popular Sichuan cuisine is now.