The quality of the scans is pretty good. The maps of the cities, and other areas, are decent, but small print will be difficult to read, even if printed on a laser printer, due to the quality of the original scan. This is, however, a minor problem, hardly worth mentioning.
This book goes into great detail on the aftermath of the 'Greyhawk Wars'. They make suggestions for the DM who wishes to base/start their campaign in a particular geographical location, by suggesting you run the PC's through other TSR procucts which take place during, or just prior to, the wars. This will familiarize PC's with the region, its major NPC's, factions, and politics. It goes into great detail about the wars, and what happened to various powers/rulers, with many suggestions to the DM as to how they can handle things, and how they can change things in their home campaigns.
There is a lot of material here, to digest. It is not for the faint of heart, though you can certainly pick your favorite region, study up on it, and ignore the rest of the Flanneous! I believe this is it's true strength, and major usefulness. The "World of Greyhawk" setting, is so complex, you really have a smorgasbord of conflicts, and regions, to choose from. This book offers a mountain of information to flesh out nearly all regions of Greyhawk, after the wars. Pick your favorite spot, and read up on what transpired during the 'official' version of the wars, then decide what you want to do with your version of the aftermath. Cheers!