Here is one I just finished and I thought it very interesting. It mostly measures the war in terms of race and class antagonisms. Its main point on slaves, that they were liberating themselves before the Emancipation Proclamation, I've read plenty of times before, so blew through it rather quickly. Since I started reading on the war several years ago, I've found tensions between common civilians and their governments, North & South, one of the most interesting aspects of the war. David Williams lays it out right here.
Overall, I can't say Williams said anything untrue; all of what he says actually happened. But, I think its very hard to measure the degree to which this is correct. A previous Williams' book I read (on the war in the Chattahoochee Valley) has Williams thoroughly in the "Loss of Will" camp (that the South lost not militarily to the North, but lost because they quit fighting because of disgust with the Davis government). But I'm not convinced that issues like the 20 Slave Law disheartened most Southerners. (I tend to lean more towards Gary Gallagher's position of overall Southern commitment in his book The Confederate War
But it certainly did disenchanted some; just as Lincoln had plenty of Copperheads to deal with. If Williams is inflating class tensions, both North and South, he certainly isn't inventing it. So I think this is an excellent book to read. Like all other C.W. books, it has to be measured against those that downplay class dissentions. How do you actually measure class dissent in the Civil War? I haven't figured that out yet. But, that it was there is undoubted, and Williams' book captures it very well.