Practical Chess Openings is a basic openings book covering all the major openings, in alphabetical order. At the beginning of each section is a general description of the opening and its history, including the names of famous players who played it. The opening lines are in Descriptive Notation and are arranged in columns from the most popular to the least popular.
Nowadays chess grandmasters do not study opening books. Instead they work with computer databases with millions of games in them, and then run them through chess analysis programs like Fritz, Houdini and Rybka, searching for new ideas and for flaws in their rival grandmaster's analysis.
Amateur chess players cannot compete against this. We must just play for the enjoyment of the game without any hope of ever making grandmaster status.
Having a book with the latest most up to date lines is of no added value. A serviceable, shorter and highly readable book like Fine's "Practical Chess Openings" is just as good and perhaps even better than a new book crammed with all the latest stuff.