Recently Asked I am a duffer when it comes to spoken English. What can I do? I want to work with access control systems. Can you please tell me about these jobs. I start stammering in the middle of interviews even though I know the answer well. I become tense and I cannot continue after that. I pause for some time and then try to recollect the answer. I have an MSc in Computer Science, but the problem is I don't have enough knowledge about my field. Please suggest some courses that will help me to build my career. How should we introduce ourselves in an interview?