insurance training university

What area of business should specialize in?
Hello everyone! I would like to open a personal training facility, an interior design business, or perhaps a real estate company or car dealership. I intend to attend college 4 years and I wondered Which of the following areas of specialization that the more I prepare to start my own business. Business Accounting Technology Systems Analysis and Economics Finance Insurance and Risk Management Professionals of Land Management and Marketing Resource Management
Well, if you want to open his own business, you will have to know everything. In that list, marketing would be most useful to a business owner (No matter what business you run, you need to know to sell!), And the Land and Resource Management, the less useful.
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