How IT helps in expanding your small business?

A lot of citizens in Poland are managing their own corporations. Few of them are distributing some materials in the internet, another are having their own shop with organic food. There are even people who are working in a beauty industry, such as beauty salons or barber shops. Those last group could truly use some help with managing it in a IT level. There are plenty of various smart apps, that may be helpful in places like that. But what service we really need? And where to find the best expert?