Don't worry about coming to the RJ. Probably 10% of our pilot group came from Piedmont and another 20% from Lakes, so they know how to transition somebody from a turboprop to a jet. Once you get to CLT for CPT & sim, "The Bloke" will take good care of you, trust me.
Just sit back, relax, and wait for a call for class. There is NO NEED to study ahead of time; there is plenty of ability to do that around going to Texas Roadhouse & Applebees in ATW...especially if you have class in Jan or Feb.