Good Chess Books
King's Gambit
1.e4 e5 - Other Open Games
Sicilian Defence
French defence
1.e4 - Caro Kann, Alekhine, Pirc etc
1.d4 d5
1.d4 Nf6 - Indians & Benonis
1.d4 - The Dutch Defence
1.c4 1.Nf3 1.b3 etc
Repertoire Books
Inspirational Chess Books
Game Collections, Biographies and so on