A how-to-write book with some interesting techniques.
Obviously some don't really work for other stories. A screenplay is about novella length, and you don't have to work about cost when dealing with prose. But most are independent.
Good tips about winning sympathy, disguising info-dump, more dangers, and so on.
I found the story type least useful, but then I've never found any how-to-write book do useful stuff with story type (or character type, really, though a few useful things can be done there).
