PrepLounge is a great community which provides access to useful materials for case study preparation and practicing. On the platform you can find many other peers with whom you can exercise and simulate business case interview. In addition there is possibility to exercise business case interviews with coaches and tutors that are extremly well-prepared and professional who lead you in mastering all possible business case structures, behavioural and fit questions in addition to simulating real business case interview. Generally the simulation is followed by written and elaborated feedback and the coaches share with you original materials which can't be found on any other place. In addition the coaches provide you with insights and tips on how to get an invitation. I would highly recommend this platform!