I think I enjoyed the idea of reading this book more than actually plowing through it. The earlier years were a little more interesting to me, when I could pick up information I didn't already know. I did learn a few nuggets about the progression of popularity of superhero, romance, war, and funny animal comics, but I think I would have preferred an overview that wasn't created in-house as a tribute to DC's work.
Each decade gets a preview blurb, and as the title suggests, each year in the history of DC Comics is highlighted. Each year gets its own summary, and shows a its most important hits, noted by a title, issue number, cover image, and a blurb (the length depending on the importance of the event). There are multiple problems with these issue summaries. Often the cover image is very small, to accommodate several other issues per page. This cuts down on the details of the image and the readability of the word balloons. Often, it looks like the very edges of the cover have been cropped to zoom in on the image in an attempt to combat this problem, but I was often more distracted by that than appreciative of the main picture being 1% larger. Sometimes the write-up of the issue was a good indication of why that issue or series was important to DC's history, but often (expecially in the later years) it would devolve into a list of what titles were involved in the ensuing crossover, who wrote those various titles, and who drew them. I suppose that's useful information if you don't have any other way of crediting the writers and artists, but it wasn't very interesting and it took up space that could have been put to better use. Occasionally, the blurb would be about a little-known, short-lived series that didn't make it. I was torn between being interested and upset by those; didn't they have anything more important to talk about than five issues of Pat Boone comics in 1959? Although, if they don't mention those series, I guess no one would ever know they existed.
Also, the choice of issues to discuss leans very, very heavily toward #1 issues. In any given year, you are looking at 90% or more #1's. Certainly talking about the kickoff of a series is important, but the overwhelming promotion of #1 issues left me feeling like I was back in the '90s collector's market. The lack of discussion of events from the middle of so many series makes me wonder if anything of import ever happened. Are the DC milestones measured in events in the characters' lives or in sales figures?
Ultimately, this volume is a glorified commercial for DC. They rarely mention failures, and when they do, they are often couched in softened language. They never admit that anything other than story and character drove their company (I guess it was only the other companies shoveling foil-covered garbage onto the market in the late '80s and '90s), and they never discuss their position relative to Marvel. You would think after reading this that DC dominated the sales charts from 1935 through 2010.