» Mon Jun 11, 2012 7:11 am
If you want to know about the current-day politics of Tamriel, you have to read "The Oblivion Crisis", the "A Rising Threat" series, and "The Great War" (ideally in that order).
If you want to read more on the Dwemer and Falmer, there's a wealth of books related to them in Markath.
If you want general knowledge, the "Pocket Guide to the Empire: 3rd Edition" is great (note: this covers all of Tamriel and beyond); for history, the "Brief History of the Empire" series is interesting, and "Frontier, Conquest" details the immigration of Nedic men from Skyrim to Cyrodiil, beginning the racial distinctions between Imperials and Nords. The "2920" series is about the end of the First Era; a little aloof, but interesting if you're deeply interested in the historical past of Tamriel (Skyrim takes place in 4E 201, millenia later).
For information specifically on Skyrim, I'd say "Five Songs of King Wulfharth", "Children of the Sky", and others I can't recall right now. If you want Valenwood, read the "A Dance in Fire" series; "The Argonian Account" series for Black Marsh. Books related to Barenziah (e.g. "The Real Barenziah") talk about Morrowind and High Rock (though if you want to learn about Morrowind, you might as well play TES:III).
If you want religious information, "Varieties of Faith in the Empire" is great, but I don't think it appears in Skyrim (you can read it online in the Imperial Library or the UESP). "The Knights of the Nine" is interesting, but kind of shallow.
If you want Akavir, you'll have to go with "Mysterious Akavir" and "Report: Disaster at Ionith".