As a teen, how do I start networking globally with professionals without feeling out of place? I will not promote

Hi everyone, I am a high school student interested in starting a business. I know that networking is important, but I am not sure how to begin. Adult professionals have busy schedules, and I want to make sure I approach them the right way. To give you some background, I have been independently researching and studying human psychology for the past 5 years. I love understanding behavior, what motivates people, and how individuals interact. I want to apply this understanding to the business world, but adult professionals have busy schedules, and I want to make sure I approach them the right way without sounding amateurish I've already taken my first step and set up a clean LinkedIn profile. Now, I would love your advice on a few things: The absolute first step: What is the very first thing I should do before I start messaging people? (e.g., building a LinkedIn profile, creating a portfolio, or researching local events?) Where to look: What are the best places (online or in person) for a teen to meet business people? How to reach out: What should I say in a cold message or email so people actually reply? How to add value: Since I do not have much experience yet, how can I make the conversation mutually beneficial? * Etiquette mistakes: What are common mistakes teens make when talking to professionals that I should avoid? Any tips, book recommendations, or personal stories would be hugely helpful. Thank you!