In contrast to mustafagander, I would suggest it's actually a good idea to try to get a headstart on your type rating. The easiest way is to simply ask PIA if they can provide you with the ATR Flight Crew Operating Manual (FCOM) volumes in advance, since these will be the basis of your groundschool. It doesn't hurt to put your head down in the books, especially if this is your first type rating.
The ATR groundschool is done through Computer-Based Training (self-study), but the FCOM is useful nonetheless.
Cheers
