The investment approach recommended by this book is to focus on out-of-favor stocks in general and the low p/e candidates in particular. David Dreman is also a regular contributor to Forbes, which should keep you up to date on his thinking.
Buying low p/e stocks has its merits: you will inevitably find yourself owning unpopular names and selling those which are in favor; by betting against the crowd, you can benefit by its excesses of fear and greed. This approach has outperformed the market over the decades.
As a practical matter, the low p/e approach is not recommended by WealthEffect.com for individuals with taxable accounts, given the level of portfolio turnover.
Suggestion: Go to Inside Wall Street