You can find a variety of companies online to help you with your market research. For example: Sundale Research's (sundaleresearch.com) primary goal is to provide new and mature businesses with objective, accurate industry data and market analysis on a wide range of topics. Their market research is intended to save you time and money while keeping up with industry trends. But your idea may be so new that you may also need to talk to potential customers, host some focus groups, talk to an ad agency, or maybe even make a prototype and float it past some people. Be prepared to spend the time. Remember, it's not about the Plan but the Planning.
To me a small business is one of the best things you can have if you enjoy operating a business; however, it does require a lot more than just enjoying ownership and running a business. Especially if you are starting a small business and even if you have had a business for many years, you should know what you want for your future. Never guess about your business. You see, without a plan, you are just guessing. We business people work hard and we always continue to hope for the best but when we guess, we're taking a lot of risks. You've probably heard the old saying from an unknown author that says, "If you fail to plan, then plan to fail."