I just signed up today. I'm here because I've been using MOC's (Massive Online Courses) and other forms of online learning for a while now. A key flaw with any form of self learning is the lack of interfacing with your instructor/teacher. I browsed this website for a bit and quickly concluded it would be great to converse with actual scientist, professors, teachers, engineers, etc. on any questions I may have. That and to speak with other learners and students like myself. Key subjects I am interested include oceanography, mechanical engineers, materials, and physics. I hope to learn a lot from you all. Thanks!