This book presents stochastic processes in a comprehensive, user-friendly and accessible way containing numerous worked examples. The large number of exercises allows readers to check their understanding of the underlying theory, along with their ability to apply stochastic modelling in their own fields, making the book an excellent basis for self-study. It assumes basic knowledge of calculus and probability theory. The authors also include important proofs and theoretically challenging examples and exercises, thus making the book attractive to those whose interest is more mathematical.