1.Introduction 2. Zeolites: what are they? 2.1.Zeolitic memories 2.2. The concept 2.3. Zeolite LEGO: Structure and taxonomy of zeolites 2.4. Natural and Synthetic zeolites 3. Zeolite Synthesis - General Aspects 3.1. Synthesis Methods 3.2. Physical Chemistry of Zeolite Crystallization 3.3. Mechanisms of zeolite formation 3.4. Influence of synthesis parameters 3.4.1...