jokes:
English: Thoroughly understand your texts - memorize about 30 important quotes for each, and summarise all the study guides (Insight/Neap) in your own words - this is what I did for AMFAS during the summer holidays - and I was extremely prepared on the first day of school.
For Language analysis - at this stage, make sure to read newspapers very often - and make mental notes of persuasive language.
For context - there is really not much to do here. Read your texts of course. If you're a good/natural writer, you'll be fine.
Methods: I would recommend skimming lightly through your textbook, and do random questions. I would recommend going in depth in two or three areas (say integration and Normal distributions) - so you arrive at school with a few 'strong points' in the subject.
Latin: I can't advise you on language specific tasks, but having done a LOTE in Year 12, I can say that this is the hardest and most rewarding subject in year 12. Are there any Latin publications? If so, read them! Also, I would recommend typing up a word list (of translations) and sticking them up on your bedroom wall.
Good luck mate
