Ok
for French
the Schaums series is pretty good
http://www.dymocks.com.au/ProductDetails/ProductDetail.aspx?R=9780070138872
in terms of textbooks it kind of depends, but it is helpful to read as much french (articles, stories, webpages) as you can to build up your vocabulary and using french in everyday language is also effective, e.g. writing numbers in french instead of english. Little things gradually build up and make a difference.
I think I might take a course at the Alliance Francaise over the summer or during term,
1. because it is an opportunity to expand my french
2. the teachers there actually have exercises, etc which you can practice on
you can check on the site,
http://www.afsydney.com.au/, for details
Another useful idea is to go to the library and borrow any teacher resource guides, as this way you can practice listening tests, and sometimes they have exercises as well. This may be useful depending on whether or not you have learnt the topics covered in the book yet or not.
My school uses the textbook 'Ca Y Est'. I have not yet got it, but once I do I shall comment on its rating as a 'good' or whether it is the 'best' book for French Continuers.
Hope this helps everyone doing French Continuers in year 11 next year.