There is a new blog called A Grave Interest. The blogger tells her stories and talks about cemetery symbolism. It is a very interesting blog.
If you enjoy that, look up Stories in Stone A field guide to cemetery symbolism and iconography by Douglas Keister. I just got it last week and while I have not really read through it, I know as I do work through the book I am going to learn a lot. The book is slender and easy to transport as you cemetery hop.