As a whole, the book delves into the idea of "camp" in context of the MGM classic musicals. The Introduction gives the reader a very lengthy definition of "camp" and it's relation to homosexuality, queerness, and gayness (which he describes as all different ideas).
If you can actually sit down interrupted, the book hits on some unique ideas, including the "butch-ness" of Esther Williams, the sissy, yet heteroerotic Gene Kelly, the cultural value of Judy Garland information on the internet, and an entire chapter devoted to Singin' in the Rain, by far my favorite chapter.
This chapter felt the least wordy, least academic. It delves into the period of silent movie to talkie transition historically. It also discusses SITR's reflection and fusion of the most often cited early MGM musicals, "Broadway Melody" and "Hollywood Revue," as well as why the movie stands the test of time.
I'm not a film student, just a film buff, and I'm glad I read the book. May be a little unaccessible-- the author could have easily truncated and simplified his book for a more general, non-academic audience, but you can get through it. Wish the paperback wasn't so expensive.