I don't read as much as I should.
Most the books I have are for reference material(illustrations mostly). The only books that I have and some I've read are:
Myths of the Norsemen
(my brother read this one, I have not)
A Chinese mythology book
(forgot the title)
Cross Sections Castle Edition
: Cool illustrations and descriptions of castle life.
Castles and Fortresses
: Beautiful pictures of actual castles and forts and with a brief history. Good book for architecture ideas. Of course nothing beats actually going to these castles in person before they become nothing but dust.
: With illustrations, showing the evolutions of weapon development, weapon origins and descriptions of weapons of history.
: A book with descriptions, some stories and cool illustrations of fairies which includes goblins, redcaps, dwarfs, elves, gnomes and many other types of creatures.
D&D Player's Handbook
: Good for character description ideas.
The New Penguin Atlas of Medieval History
: Small guide book about Medieval Europe , listed chronologically, using maps showing territories, populations and migrations of cultures.
My favorites have smile emotiicons.