The book itself is not a particularily so straightforward read. The centre of the book types the cornerstone of worth investment. It has been released and modified and republished numerous times, and still continues a huge leverage in the world of supply markets - even though Graham passed away in 1976.
As time has passed, the procedures recounted by Graham to consider a business have been superceded. Computing power has blew up and this has put much more convoluted investment devices into the hands of most amateur and all expert investors.