Im in grade 10 and i take EM too , paper 1 and 2 are very easy and mostly general knowledge but paper 4, alternative to practical, is not hard but you need to do the past papers and let your teachers help you. I have some notes and i hope ill post them later, may be after 2 weeks because i have my final exams on sunday. By the way, where do you live? Im in Dubai, UAE.