The world of Conan has always been steeped in sorcery and strange magics. Now, with the Book of Skelos, players and gamemasters can flesh out their worlds with all sorts of esoteric goodness! New sorcerous archetypes complete with new backgrounds, educations and natures! New spells and artifacts! All kinds of rituals! And for gamemasters, expansive rules on coming up with cabals to pit against each other and the history of sorcery to help guide world building.
Overall, this looks like a great source book, chock full of stuff to take your Conan game to new, magic-fueled heights!