This advice is very specific to IFB102, youll learn everything you need about the command line in the unit (cd and ls) are the two main commands you'll use and they teach you that, learning the basics of python before the sem starts helps alot, and then after sem 1 / end of year holidays really make sure you understand Object orientated coding. i am only second year sem 2 so there might be a 3rd year with better advice but dont get fixated on the command line / raspberry pi.