Start in Systems. Get to know it front to back, focus on the important pieces (e.g. powerplant, apu, electrical, etc.). Know your limitations and memory items before you show up, you will have very little time to learn them here.

First day is basic stuff and a hazmat test. So, look that portion of your GOM over. Second day is doors training, more review, no test. And third day is systems fast and furious followed by a test which includes but is not limited to FARs, AIM, GOM, Systems, Winter Ops.

If you study before you get here, you'll be fine. After ground school, you need to dive straight into the SOP and prepare for the checkride.