According to telecom experts, 6G communication is expected to be path-breaking in its offerings. Artificial intelligence (AI) is being portrayed as the prime contributor to the enormous success of 6G networks. AI is set to play a pivotal role in shaping 6G to be relevant and rewarding for businesses and individuals. Several other digital technologies gel well to present 6G as the game-changing phenomenon in the communication world. One noteworthy facet is that the recent concept of semantic communication is to be elegantly realised through 6G networks. In this AI-first 6G book, we have elucidated how the predictive, generative, and agentic capabilities of AI are to make 6G communication penetrative, pervasive and persuasive too.