In my opinion, education is a tool that can defeat poverty, be it in the case of an individual, a society or a country. You said what advice should be given to a poor person to improve himself.
In my opinion, if I see a child, that is, between the ages of 10 and 15, if I advise him, I will definitely pull him towards education. Because he has enough time for education, he can improve a lot in life by taking education.
 On the other hand, if I see someone who is between the ages of 30 and 35, if I advise him to improve himself, I will definitely advise him to become a small businessman or entrepreneur or join any employment.
Currently, various training centers have been started by the government in almost all countries, where various trainings including freelancing, electric, driving, small entrepreneurship are provided free of cost. There, he can create employment by improving his skills.