C. SUSY generalization of reheating and preheating 191 1. Gravitino problem 192 2. Gauge singlet inflaton couplings to MSSM 194 D. MSSM flat directions, reheating and thermalization 195 1. kinematical blocking of preheating 196 2. Late inflaton decay in SUSY 197 3. Decay of a flat direction 198 4. SUSY thermalization 200 5. Reheat temperature of the universe 202 E. Quasi-adiabatic thermal evolution of the universe 203 1. Particle creation in a quasi-thermal phase 204 2. Gravitino production 205 VII. Generating perturbations with the curvaton 206 A. What is the curvaton ? 206 B. Cosmological constraints on a curvaton scenario 209 C. Curvaton candidates 210 1. Supersymmetric curvaton 211 2. The A -term curvaton and a false vacuum 214 3. Thermal corrections to the curvaton 215 4. u$_{1}$d$_{2}$d$_{3}$ as the MSSM curvaton 216 5. Models without A-term 218 6. Curvaton and non-Gaussianity 219 D. Inhomogeneous reheating scenarios 220 VIII. String theory models of inflation 221 A. Moduli driven inflation 224 1. Basic setup 225 2. KKLT scenario 226 3. N-flation 227 4. Inflation due to K¨ ahler modulus 228 B. Brane inflation 230 C. Reheating and thermalization 233 6