Yes, welcome to both GH and hybrid world! You'll find lots of answers to your questions by looking through the Discuss area. I'm amazed at how much I learned in a short time, and how much I've been able to improve my mileage. The people who post here really are fantastic! I'd suggest starting by plowing through as much of the Prius header as possible.

I drive a 2006 Honda Civic Hybrid (HCH II). The Discuss topic header says it is the "arch rival" of the Prius. Hope we can still be friends, though...