This is an ok adventure book that reminds me a lot of of John Carter (Edgar Rice Burroughs) and Conan (Robert E. Howard).

The world of Gor is a feudalistic and stratified society, where people are either free or slaves. The free people are further divided into castes.

The world is dangerous and it generally follows the rule of "might is right". There is also an element of dominant/submissive through the interaction between the master and slave. Like most feudalistic societies, women have a harder life and are at the whim and call of the men.

In the first book, we are introduced to Gor through Tarl Cabot, someone from our Earth that got transported to this alternate world. There, he is trained as a warrior and she goes off on a mission against an enemy city. He has a lot of adventures, fighting against people and creatures. He defies death a few times and at the end of the book, gets sent back to Earth.