The WOMMA 2013 Influencer Guidebook provides a comprehensive overview of influencer marketing, addressing the changed digital landscape and defining what constitutes an influencer. It outlines various attributes, classifications, and measurements relevant to influencer marketing while emphasizing the importance of understanding industry context, brand objectives, and influencer characteristics. The guidebook aims to serve as an educational resource for marketers without establishing industry standards, focusing instead on best practices in developing and implementing influencer marketing programs.