As I've been watching battles and batte reports online, and facing more opponents with different armies as I've played more, I find that I'm growing interested in learning more about both the lore and the rules for other factions besides by beloved Seraphon. The books I own in the app are the Seraphon Battletome and a general Age of Sigmar book that's a couple of hundred pages long. Oh, and the two Generals Handbooks. Does anyone know if the various books are listed anywhere in order of publication? I don't necessarily have to buy and read them that way--and in fact plan not to, as I'm especially interested in the newer books like the Nagash and Idoneth Deepkin books that have new ways of implementing rules and so on--but it would be interesting to me to know what all's available and what order they came in. I think the first one I'm going to buy and read, as suggested above, is the Legions of Nagash book, because I see and face Death a lot, but suggestions are not only welcome, they're solicited!
The full list of Battletomes in order of publication, along with other books: http://whfb.lexicanum.com/wiki/List_of_Warhammer:_Age_of_Sigmar_books And I recommend the Fyreslayers one to anyone as it's packed full of lore and painting guides for the different lodges, even if the rules section is now out of date. In fact most of the book is lore, so read it, and join the noble Sons of Grimnir!
Okay, I just purchased and downloaded the Battletomes for Legions of Nagash and Fyreslayers. I'll probably continue to follow that pattern as I have a little hobby money, one older one and one newer one.
@Christopher I would pay great attention to the wise words of the venerable @Crowsfoot on the subject of Legions of the Great Necromancer. He knows his Undead. ‘Nuff said.