Diana Gabaldon's books are fantastic! Start with Outlander. A woman from post WWII England is inadvertently sent back to Scotland in the year 1743, just before the revolt. They're romances, but very well done and her research is impeccable.
I agree with everyone about Stirling's Dies the Fire. The only thing that got me through the book was the fact that it takes place in my back yard. (well, not literally, but close enough)