Choose your research method based on what you are trying to accomplish. I don't know anything about IT, but I do know that your first step is to start reading about what interests you MOST. Read articles that fascinate you. When you do, you will want to know more, and you will soon have unanswered questions. As hard as you look, you will not be able to find answers to your questions or solutions to a problem. That is when you know you found a good topic.
If your topic involves people's perceptions of something, you might choose a qualitative method like case study or grounded theory.
If your topic involves measuring effectiveness of something, maybe you want to use a quantitative method like correlational research.