DD (year 10) has just started her GCSE computer science course and we've been told the teacher is leaving at Christmas. There isn't another teacher and, given the well publicised shortage, it took the school forever to recruit this one so I'm feeling really pessimistic about her getting anything other than second-rate cover any time soon. What can I do to help her through this? We have the GCSE OCR CS revision guide by CGP. Will that be enough for self-study or are there more resources we can get to help?