I've been a Conan reader and fan (books first, then comics, then any and all of the "pastiche" books out now by Roland Green, De camp, etc.) since the mid 60's. Started with the Lancer sets, then Marvel's Barry Smith comic version, then collecting the early Gnomes, so, while I may not be a Conan "expert", I've sure been there (and still am, to a great extent, although I have diversified quite a bit!).
This is a great Conan chronology, including the writer, Robert E Howard, and his life and influences. Not a biography of Howard, you can get much more comprehensive information about him in other places, but a nicely detailed progression and biography of sorts of the Conan character in prose and art. (there are a pics of Arnold as Conan...too many in my opinion... and, while I do consider him the quintessential Conan of the Movies, I can certainly take him or leave him in "real" life! there are also movie stills of the other characters in the Conan movies, including Grace Slick..)
There is much detail, but not overwhelming, and enough to inspire one to find out more on Howard and his life.
But the ART! That's what this one is really about...Loads of images of the Conan character by the best fantasy artists of the century, many full page and two page spreads...and a lot of info on the progression of Conan from the "Weird Tales" years to the later non-Howard stories.
A great addition to the Conan library, and issued at about the same time as the oversize "Conan the Ultimate Guide..." by Roy Thomas, which I also highly recommend because it takes you into the World of Conan and highlights the geography and peoples of the Cimmerian's surroundings. (art in this one is fantastic as well)
One word description: "Enjoy!"