First, make sure to be natural in the group and 1-on-1 interviews. They will very likely ask you about your plan for your future (i.e. career-wise) and your interests, so make sure you have a clear and detailed idea about what you plan to do. You can obviously change your mind later but it's good to show clarity at this point. The group interview has a few puzzles, but it isn't something you can necessarily practice much. The discussion is a key part of the group interview, so try to contribute unique points. Don't talk too much tho as it can make it seem forced.
Good Luck!
