1.1 Introduction1.2 In-line Gabor holography1.2.1 Construction of hologram1.2.2 Reconstruction of hologram using normal incidence of reference beam1.3 Off-axis Holography1.3.1 Construction of off-axis holography1.3.2 Reconstruction of off-axis holography1.4 Polarization based holography1.4.1 Parallel polarization1.4.2 Perpendicular polarization1.5 Off-axis holography with 3D objects1.5.1 Reconstruction of virtual and real images1.6 Holographic magnifications1.6.1 Lateral Magnifications1.6.2 Longitudinal Magnifications1.7 Reflection holography1.7.1 Construction1.7.2 Reconstruction1.8 Practical demonstration of holography