How do you become a buisness man?

Becoming a businessman (or businesswoman) is easy. All you have to do is start a business! The hard part, of course, is making it grow. First, work as hard as you can in school on your studies, particularly communicating (Reading and writing) and math. Working hard now will be worth it in the future. Teach yourself how to learn new things, like Google Docs and Spreadsheets, because they'll be essential to you when you're running a business. Learn the basics of finance like keeping a budget and managing a bank account. Learn how to find answers on Google.

Every business starts with an idea. Where do you find your idea? The best ideas are when you've found something that meets these three things: first, it's something you really care a lot about. Second, it's something you can do very well. Third, it has to be something people will pay for. Find something that matches those three, and you'll probably have your idea. Looka round you at the products and services you use. When the so-called best isn't very good, and you think you can do better, go for it! When a friends says "I wish somebody would make <blank>," ask yourself whether it's something you can do.

Be curious -- ask lots of questions. When you're told something can't be done, don't accept that answer right away. Lots of businesses get started by building and selling something that people said couldn't be done.

Become an apprentice -- find a business that you'd like to own or run someday and see if you can do some work for them after school, and keep your eyes and ears open and learn everything you can about the business.

I hope this helps!

Christian,
I agree with the responses as far as they go. However, books have been written on this topic and I suggest you read a few. There are many paths to starting a business. All involve assuming a certain amount of risk. If it were easy, everyone would be successful.
In my own case, I started a business late in my career. I worked as a consultant while using the income to prototype several product ideas I had. I also had to develop new skill sets in order to minimize start up expenses. Examples include web site development, international shipping and customs documentation, and 3D solid modeling CAD. If I had to pay for expertise in those areas, I probably would not have succeeded.

That said, no business can succeed without customers who want, or have a need for what it is you are selling. One of the biggest challenges can be gaining access to these potential customers.
Before investing any money on an idea, it is paramount to think through every aspect of starting and running your business. This is the basis for a business plan Do your research for any business idea that you have and you can avoid many of the pitfalls that will surely crop up. Best of luck. Mark