This chapter addresses practical strategies for training teachers to teach multimodal composition in online courses. Specifically, trainers should focus on at least four skill sets: developing and scaffolding multimodal assignments; creating multimodal instructional tools; incorporating technology labs within the curriculum; and adopting and adapting the multimodal ePortfolio as a reflective document for showcasing student learning. Teachers particularly benefit from these skill sets, which enable them to guide students in acquiring such multimodal literacies as learning to design rhetorically effective multimodal projects for various audiences and purposes. The chapter offers theoretical and practical advice for trainers where the instruction will occur in online settings as well as the training itself. This advice also is useful for teachers of face-to-face (onsite) multimodal courses when using a robust learning management system (LMS) for student support.