https://flippednormals.com/downloads/concept-sculpting-for-film-and-games/

In Concept Sculpting for Film and Games, you’ll learn how to go from a rough base mesh to a refined concept sculpt, which can be used in the film industry and for games. We cover the entire process, where some chapters are real-time and others are sped up. Everything is properly narrated to make sure you get as much as possible out of it.