Amazon has three good Thor titles available for free on Kindle or its comic platform comiXology. These titles regulalry go for $9 or more. Take a look at the Thor God of Thunder Volume 1 first. It’s a good way to get some background on the demigod and some of the other characters involved in the film this Friday.
- Thor: God of Thunder Vol. 1: The God Butcher
- Thor Visionaries: Walter Simonson Vol. 3 (Thor (1966-1996))
- Thor by J. Michael Straczynski Vol. 1
Imprisoned on the other side of the universe, the mighty Thor finds himself in a deadly gladiatorial contest that pits him against the Hulk, his former ally and fellow Avenger. Thor’s quest for survival leads him in a race against time to prevent the all-powerful Hela from destroying his home world and the Asgardian civilization. Thor is imprisoned on the other side of the universe and finds himself in a race against time to get back to Asgard to stop Ragnarok, the destruction of his homeworld and the end of Asgardian civilization, at the hands of an all-powerful new threat, the ruthless Hela.
In the distant past, Thor follows the bloody wake of murdered gods. In the present, the Thunder God discovers a forgotten cave that echoes with the cries of tortured gods! And thousands of years from now, the last god-king of a ruined Asgard makes his final stand against the God Butcher’s beserker legions. As three Thors from three eras race to stop the God Butcher, the full extent of his vicious scheme takes terrifying shape!