Hm, I can't think of any particular titles but as for historical subjects to read about...? Right now I'm in a phase of reading Chinese history but earlier this summer I was fascinated by the Tudors. There were a lot of interesting people around that time, so anything about the Tudors I'd recommend.

I've finished DH a few days ago! I wrote a post about 1-2 hours after finishing it, you can find it here: http://users.livejournal.com/_byakko/106520.html#cutid1

There are two things that I didn't think that I could love more than I already did... but I love Neville and his character developement more than ever and DH actually made me a stronger Harry/Luna shipper.