When you say "terminal" I think what you really mean is a "shell" which runs within the Terminal. Googling for "bash", "shell scripting", "beginner" and "hello world" are likely to lead you to more useful content.
Also, as much as it's helpful to write code, it's also helpful to read code and try to understand what it's doing. Ask lots of questions.
Also, as much as it's helpful to write code, it's also helpful to read code and try to understand what it's doing. Ask lots of questions.