DevDocs corrections part 1

Started reviewing the developer docs, finding lots of things to correct. I'll do more later, but please review this batch first so I know what, if anything, needs to be fixed moving forward - I'm not entirely sure on the markdownish format used.
Both forms are standard English, just as you can use or not use a comma before the final conjunction in list (one, two, and three).  Here's a page which describes different capitialization styles (we use number 4): http://www.quickanddirtytips.com/education/grammar/capitalizing-titles?page=all

All the text and images use the style described in the Microsoft Style Guide ( https://en.wikipedia.org/wiki/Microsoft_Manual_of_Style_for_Technical_Publications ) for the simple reason that it's the style I learned early in my career.  I don't really care what style we use, but I'd prefer not to update everything for so minor an issue.