I have over one year to prepare for the academic test.This is the list of materials that I already got :

Advanced Grammar In Use,English Grammar In Use,Cambridge Grammar For IELTS (I need these to improve my little grammar)
Cambridge IELTS 1,2,3,4,5,6,Insight into IELTS,Insight into IELTS Extra,101 Helpful Hints for IELTS,IELTS Practice Test Plus,Step Up To IELTS,IELTS Test Builder,Focus On IELTS,Instant IELTS,Check Your Vocabulary For IELTS,Target Band 7,IELTS Secrets

Please help me choose the right learning strategy that works best with these materials