I own perhaps 20 books on the Bird's and this is one of the worse. Mostly because the material is so poorly organized; no real attempt is made to sort through the (admittedly tangled) move orders/motifs/variations in this opening. Also, the author seems to have a 'bad attitude' even though he plays the opening and has several examples in the book. The section on the Leningrad Dutch-Reversed is better than the others but still lifeless.The entire Everyman opening series has deteriorated a great deal the past two years and I'm about done buying any new ones, especially if they are as bad as Bird's Opening.