First of all, there are no age and academic qualifications for studying technical majors. 30 years old is a good time to learn technology. You can choose to study technology. Make up. Manicure, semi-permanent tattoo in beauty salon. Image manager, etc. Everything you can learn. The above professional skills are not limited by any age or education. Boys, girls and children can learn. It's easy to find a job with ... and the salary is good in the later period. If you want to study. You can find a very professional and formal school to study.