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It's very hard to give your suggestion for now, what you asked is too broad to give a good advice. I'd recommend you to narrow down your interests, there are thousands of different jobs in IT industry. If you are a college student, you will need to look into these majors: Information technology, computer science and digital media. These majors are all IT related. Visit your adviser often, they know what's the best for you, and also the needs of industry.
If you are a not college student, and trying to switch career, I'd suggest you to make some friends who are currently in IT field, such as developer, programmer, web designer, help desk people, db admin, etc. They will give you useful thoughts.
If you are interested in technology but are unsure about what to focus on I would highly recommend looking into a career in management consulting. If you come int with some skills they will invest in you in order to build up your knowledge in business and technology.