Welcome to the golden age of ridiculously long subtitles.
If one enjoys, or, more likely, grew up enjoying classic science fiction, this is worth reading. Nevela-Lee shows how editor Campbell seeded the writers in his pulp stable with story ideas. He also goes into a lot of detail about Hubbard and the murky origins of Scientology. Be warned, though, that if you admire these men your admiration might not survive reading about their relationships and attitudes towards women.