There is a preview? Awesome. Not sure if I should watch it though. Might get spoiled.
BTW, storytelling through acting and cinematography is always better then cramming in exposition for movies and series. I haven't read the books, but if you look at LotR the books vs the films, the film removes a lot of fluff like backstory about elves and dwarfs, but this is replaced by just showing you places like Rivendell and Moria, where you can imagine the backstory for yourself. Its called "show, don't tell" If the writers are smart, they will do something similar. It seems that they are.
Anyway, welcome.