I assume that when you say, “starting a business”, you mean something like the suggestion below from the Yeshiva University Java Programming page. Besides a business plan and an adviser, a business owner should definitely get some training of some kind.
Microsoft Virtual Academy offers C# training for free. Completing the Certification tests together with some code samples from a real website will probably get you a temp job where you can prove yourself.
“Computer Programming
The financial crisis has only strengthened the need for people trained in computer programming and business management. Java was developed by James Gosling in 1990, at Sun Microsystems. C# combines the robustness of C++ with the advanced features of Java. C# language is used with Visual Studio IDE. If you are writing a web-based application in ASP.NET, you will be required to code in C# or VB for the backend.
To land a management position in the computer industry, you’ll need the right technical training program for the job. Computer programming is full of employment prospects because of emerging technologies, and the growth of the internet. A given website’s success is governed by two factors, visitor traffic and online sales conversions. Think about the type of online business that you want to start, and then build an e-commerce website using a template or HTML, adding a database and programming routines.
The easiest way to start is by generating database-driven pages, and monetize your traffic with Google Adsense. You can drive targeted visitors to your site at a reasonable cost by learning search engine optimization (SEO) techniques, or buying paid traffic through Adwords. You can also make money with affiliate programs, or charge monthly membership fees, if making either iPhone or Android apps. Just web page design and layout isn’t enough, if no-one can find it in Google’s search results. You’ll also need online marketing skills, and the ability to drive conversions.”