Axel Theobald provides a comprehensive guide to the necessary procedures and current applications of online market research. The topics are presented in a way that is understandable even for laypersons, with a strong practical relevance, despite the complexity and multitude of individual aspects that must be considered when conducting online surveys. Additionally, ten experts contribute guest articles that illuminate relevant aspects of the field, such as data quality and privacy, online communities and social media, as well as mobile research.