If you're interested in Roman Britain, Ruth Downie has put on her blog an interesting list of sources for Roman Britain, to which she kindly added my own random comments about historical research.
Ruth seriously knows her stuff. She writes mysteries set in Roman Britain, starring the somewhat put-upon and incredibly funny Ruso. She's up to book 4. The first is called Medicus, from which we may deduce Ruso is a doctor. Some of his historically accurate prescriptions have to be read to be believed. It's a good thing Ruso and Nico will never work together, because it would be...utter...chaos.