Welding is in high demand at this point , and increasingly getting more demanding , with the passing of time. It’s good to start out with a beginner course in high school, then entry level welding afterwards.
Elian: great career choice as welders are in high demand. Per dan's suggestion, it is wise to start with a beginner course to make sure it is a career path that you will enjoy. Next, I would contact your local welding union representative and inquire about entering the trade via an apprenticeship program. They will likely pay for your training and pay you a small stipend while you learn, and eventually pay you more as you progress through the training program. Ultimately you will become a full member of the union and gain full benefits and a great income.
How wonderful that you are thinking about possible future careers early! In addition to great tips from others regarding classwork and internships, even before that I recommend learning more about the variety of careers in welding. What is a typical work day like? What are the working conditions? What about those jobs most excites you? What is the typical pay? Not all jobs in welding are alike: working in ship building is very different from working on high rise building construction, underwater pipelines or as a boilermaker. Understanding some of those options and identifying which excite you most can be a great first step to help you frame long term educational and career goals and be a powerful motivator.
Check out online resources to explore the range of welding jobs/skills in demand, which most interest you and what a typical work day might be like. Here are just a couple of online resources: (1) https://www.mechanicwiz.com/types-of-welding-jobs/ and (2) https://www.indeed.com/career-advice/careers/what-does-a-welder-doFind a welder in your area to talk with about careers in welding. A 15 minute informational interview or chance to visit a welding shop can be extraordinarily informative. It might even help you land an internship later!
Ron recommends the following next steps: