This series of lectures provides an overview of search advertising, its history, and its role in the digital marketing landscape. The lectures discuss the evolution of search engines and the emergence of Google as the dominant player in the market. They also explain the process of search advertising, including bidding, audience targeting, and search engine optimization (SEO). The advantages and disadvantages of search advertising are explored, highlighting its relevance to consumers, effectiveness in generating leads, and potential challenges such as high competition and limited creative options. Finally, the lectures touch on the future of search advertising, with a focus on the increasing role of artificial intelligence and voice search.