Hi! I'm in Year 11 and I'm doing English Language! I really like it and personally think it is a great subject and much more interesting than English.
Everyone says it's a great subject for those who like maths and sciences as there is a lot of analysis.
Have a look at the study design:
http://www.vcaa.vic.edu.au/Documents/vce/englishlanguage/englang-sd-2012.pdfIt would be great if you start looking at grammar in detail like type of clauses, sentence types and structures, etc. from some english language textbooks from your school library or other grammar books and online. Grammar is the first thing I learned in English Language and is important for Year 12.
We also looked at language acquisition- how we learn language.
So pretty much just look over textbooks. Hope this helps and good luck with your subject selection!