Fred Bronson is a chart trivia columnist for Billboard magazine and his love of the charts shines through in this book. It consists primarlity of lists of songs from the Billboard Hot 100, either by artists, producer, label, year or topic. So you get the top 100 Beatles songs, the top 100 Motown songs, the top 25 songs written by Diane Warren, the top 100 songs of 1979, etc.
It keeps the biggest for last: a 5000 song chart of the biggest hits of all time.
The only problem is that all lists are based on equally weighted weeks from the history of chart music. So the 50's (where songs were fewer and chart life longer), and the 90's (where singles were largely abandoned and those that were releases remained on the charts for over a year) tend to dominate many of these lists.
More than half the top 100 of all time are from 55-57 or the 90's. Is 'A Blossom Fell' by Nat King Cole really a bigger hit than Michael Jackson's "Billie Jean"? It is here. In fact, with the fast turnover of hits in the 60's only "Hey Jude" makes the top 100. Pity there wasn't some way to balance this info, possibly by factoring in Top 40 listener stats or total singles sales by year as a way to adjust for historical imbalances.
The saving grace of the book is the Charts by Year section. Here the songs have an even playing field, so you can compare songs like "Love Will Keep Us Together" with "Jive Talkin" in 1975, or "Sunshine Superman" and "Hanky Panky" in '66, or "Wind Beneath My Wings" to "Love Shack" in '89.
If you want more specific info on a song, you should also check out Fred's Billboard Book of Number One Singles, a treasure trove of musical trivia.