You couldn’t have written this on that keyboard. That keyboard has no a (or z).

The short text at the back of the book/cover that is usually a summary of what the book is about, I believe. Also often had some short reviews, like the op title refers to. (The stuff you look at when you are deciding if you want to read the book or not, generally.)

It’s equally, or more, correct to say “female/male people”. It’s just like “poor people” is ok, but “the poors” makes you sound like an asshat. Including “people” makes the difference.