There is a ton of content to learn in C2. Even with all the thorough work put into the manual, there's still a lot of content that will go over the head of all but the most experienced indie developers here. Understandably, the Scirra Bros can't spell out every little detail in the manual. That would be far too many bunny trails and tangents when addressing all the features in the program.
But it would be mighty helpful if there were a glossary with more in-depth explanations, illustrations, and "beginner level" terminology to help drive home what all these (often) advanced terms, concepts, and features are.
WebGL? IAPs? ...and many more. What are these things and how can the indie beginner (or maybe even the more experienced) developers make sense of them to make the most of C2?
I think a glossary with links to keywords in the manual would help greatly.