Search Engine Optimization (SEO) Secrets question

Hello Everyone, My name is Rida Hashmi. I am from Lahore, Pakistan. I am an Intermediate College student & want to take admission in Computer Science at a University. Although I was searching for current hot Computer-related fields for jobs in 2020 & I found SEO in it. I need to ask about Search Engine Optimization that does it require coding like other computer fields? Can any SEO Expert please guide me Or any SEO company in Lahore offering Internships for fresh Candidates to learn from scratch? Thank you in Advance.