[MonkeyIsNull]

I remember reading Ender's Game and being blown away by it when I was younger. Years later I picked up a new edition of it in a bookstore and read the back cover. The spoiler is right there. IMO that ruins the entire book if you know. I still can't believe the publishing house did that.

[Tor3]

Things like that is why I too always tried to avoid reading back covers or jackets. Way too often they reveal crucial parts about the story. Spoiling Ender's Game makes reading the book 90% pointless.

I also avoid film trailers like the plague, except for pure zero-content entertainment and visuals-only stuff like Marvel movies (to the extent I even bother with them anymore). Every other type of trailer I block or avoid watching. One problem I remember having with British TV series, in particular Doctor Who, is that they would spoil the next episode by showing a trailer of it in the previous one. In the end it made me stop watching it altogether.

For books of (to me) unknown authors I'll read the first couple of pages, that'll quickly reveal if they're of the "show" or "tell" type of authors, and other things about their writing style. Other than that I'll try to skim the headline of the summary but avoiding reading more than the bare minimum to get an idea about what it's about but nothing more. Sometimes I read books completely without any idea about what's it going to be about.

[redhale]

Ender's Game was the first twist that really "got" me as a kid. Ignited my love of scifi for sure.

I went to Amazon to read the description just now, and it doesn't really give anything away that isn't in the opening chapters, which hopefully means they changed the cover from what you saw.