This document discusses e-learning environments and e-learning design. It covers relevant learning theories like behaviorism, cognitivism, constructivism, and connectivism. It also discusses several instructional design models used for e-learning like the 4C/ID model, ADDIE model, ASSURE model, and Dick & Carey model. The document then covers e-learning and blended learning design, including considerations like communities of inquiry, MOOCs, virtual classrooms, and flipped classrooms. It emphasizes that effective e-learning design should follow learning theories and instructional design principles.