There are currently five books of Game of Thrones out right now, and two more are on the way. There is also a prequel book.
All books were written by American novelist and author George R. R. Martin for which he got Locus Award for Best Fantasy Novel.
It defines the history of Targaryens and chronicles the conquest that united the Seven Kingdoms under Targaryen rule through to the Dance of the Dragons.
In this book, Dany marries Khal Drogo and makes dragon babies and Ned Stark dies.
In this edition, Dany goes to a weird Qarth and Joffrey gets the Iron Throne and does evil things.
A STORM OF SWORDS is the third volume in the series in which Evil Joffrey dies and Dany acquires the Unsullied army.
In the 4th publishing, Brienne spends a ton of time on the hunt for Sansa, who's hiding in the Vale with Littlefinger and Arya starts training with the Faceless Men.
In the 5th part Dany, in Mereen, locks up her dragons because they're too dangerous and Bran meets the Three-Eyed Crow.