The STAR Library Network (STAR Net) utilizes webinars as a key tool in its suite of professional learning opportunities relating to STEM learning in libraries. Traditionally, continuing education for library staff has taken place in person, such as at conferences and workshops. While these touch points provide crucial face-to-face networking opportunities, highly interactive webinars provide learning conversations that help bridge the gap between frameworks and resources to practical application in daily practice. Through webinars, STAR Net shares ideas, demonstrates activities, and engages with library staff from anywhere in the country, and the free access to webinar recordings allows staff members to view them when most convenient. When used in conjunction with broader professional learning opportunities, webinars can have a major impact on library staff in adopting successful STEM facilitation strategies for their library programs and services. Key STEM programming opportunities, including the 2017 solar eclipse and NASA@ My Library events, have given library staff a focal point for participating in ongoing online training.