Every effort is made to accommodate francophone candidates. Currently it is a bilingual course, however, the functional language is English. Exams can be taken in either language, and projects can also be completed in either language.
Language will not be a barrier, so don't expect it to be.
As far as preparation is concerned there will be a pre-reading list sent out in your joining instructions. It will have all the usual suspects (300 series), but those will be covered ad naseum during the course, so you can almost get by without looking at them if you are a quick reader. I would however, get into the new Signals in Land Operations (SILO) as well as the ACP-125 1B. Become intimately familiar with Military Symbols for Land Operations (B-GL-331-003) as it will help you on both Mod 1 and 2.
Next Summer will be the last time for training under the current trade structure, so there will be a bundle of fun to be had at CFSCE.