Its totally fine not to know what you want to go to school for. The first two years of college are basic core classes that every student must take with some flexibility. It allows you to taste and see bits and pieces of every major. You will choose classes in every area and this will help you to see what you want and don't want. Im not sure how the online courses will do the class setup but I still believe they will have some sort of system like this. I know they won't just jump you into major courses because that would be tough.