Ok firstly calm down and welcome to fsn lol ... =)
Further maths consists of the CORE(bivariate data, univariate data and time series) and about 6 or so modules, however you will only cover 3 of them (business maths, number patterns, geometry and trignometry, graphs and relations, matrices and networks).
SACs will vary from school to school but normally there will be some multiple choice questions and some short answer/analysis questions, in order to get you used to the layout of the end of year exams (exam 1-Multiple Choice, exam 2- Short answer)
SACs are worth 34% of your score while the exams are worth 66% (33% exam 1, 33% exam 2)
For more information you might like to look at the
study design for further maths
Hope that helps a little =)
If you need me to further explain something just let me know
Edit: 6 modules not 7 lol