Besides the Pirc, we analyse in the first part of the book all possible set-ups in which White refrains from the moves 1.e4 and 1.d4, namely: 1.f4, 1.b3, 1.b4 (Chapter 1), 1.Nf3 (Chapter 2), 1.c4 (Chapters 3, 4).
The second part of the book (Chapters 5-9) is devoted to opening schemes in which White does play 1.d4, but then he does not follow up with c2-c4. This is the Trompowsky Attack (d4, Bg5) and the London System (d4, Nf3, Bf4). In response to these set-ups Black, as a rule, remains true to ...Nf6 and ...g6.
The arising opening schemes are similar to the King's Indian Defence (see volume 2), or to the Pirc Defence. This should facilitate considerably the players to master their opening repertoire.