First of all, I would like to let you know that this is not the best interview tips and I'm not giving assurance for that but it might be one of the best :) APTITUDE : Concerning Aptitude, I would ask you study from Quantitative aptitude & Verbal & non-verbal reasoning by R.S.Agarwal where all kinds of questions have been given with clear explanations for answers. You can study in this website too if you've only few days left for your interview. GROUP DISCUSSION : CONFIDENCE matters the most while you attend GD. They'll give you a topic and they'll give around 2 minutes to put forth your views on that. You have think of simpler but vital point and as soon as that 2 minutes gets over you should start speaking your points. Remember, "YOU HAVE TO MAKE OUT YOUR CHANCE" and chance won't come to you. They don't expect you to be too good in English, having moderate English knowledge is more than enough and if you're not sure about the given topic speak something irrelevant as "SPEAKING SOMETHING IS BETTER THAN SPEAKING NOTHING"