1. Introduction

2. The Physics of the Growth Rate

3. Redshift Space Distortions
3.1 Formalism
3.2 The Power Spectrum
3.3 Bias
3.4 Beyond the Kaiser Model
3.5 Alcock-Paczynski Effect

4. SKA Surveys
4.1 HI Surveys
4.2 Late-time HI Intensity Mapping

5. Forecast
5.1 Fisher Analysis
5.2 Growth of Structures

6. Discussion