This is one of the most basic questions that you may be asked in an interview. Well prepare for this question in advance because this is the best opportunity to impress interviewer. Start with your educational qualification you have obtained then Speak about your work experience. Focus on what you skills you have learnt from them and how they will be of benefit to the role that you are interviewing for. Highlight your important strengths and achievements. You can also tell about your good hobbies, musical instruments you play, languages that you know etc.
The video below gives clear picture How to answer this Interview Question about Tell me about yourself?