This article is based on only my memory of one volume of the series, so please excuse any mistakes I make.
Each volume of the manga contains a number of weird stories. The stories are more or less independent of each other; it is not as if each story starts where the last leaves off.
Most of the stories contain ghosts, monsters, or similar. Some of the stories are spooky; a few are more or less comedy; a few seem to be almost morality stories... you can find a variety of stuff in here. Basically, it is a good read for when you want to give your brain a rest. And the Japanese in the stories, for the most part, does not seem especially difficult. (If you don't understand the words, the pictures make it mostly clear anyway.)
wikipedia.org dumped 2003-03-17 with terodump