Reddit mentions of Ashes of Glory: Richmond at War

You're really in the heart of the confederacy in the Petersburg/Richmond area. This makes it difficult to recommend books specifically about those areas because there is just much that happened. You could try Stephen Sears' book on the Peninsula Campaign. There is also Ferguson's Ashes of Glory if you're more interested in the social aspect of Richmond.

In my opinion, it's better to try to get a general feeling for the war and decide which aspects you are most interested in learning more about. The books I recommended before, or even Ken Burn's Civil War documentary, are great places to start. Reading about specific battles and campaigns first may not mean much to you without understanding how they fit into the bigger picture.

If you haven't already come across it, I highly recommend the Civil War Traveler website to figure out which sites you want to visit.