Bad hair days
I was similarly stuck when I did my PGCE, having no computer knowledge and having not written an essay since college 11 years earlier. At least two of my classmates left because they simply could not cope with the coursework.
PGCE providers must practise what they preach and be prepared to cater for individual needs. Essay-writing skills, taking notes in lectures and using libraries and the Internet for research are things that should be supported by meetings with a tutor more than once a week.