Unless you have read whole series don't really bother as hordes of people with back stories you don't clearly know keep popping up. And by popping up I mean they tend to have more page time than the protagonists.
I started skimming big time.
Plus the writing and story constructing style wasn't really appealing to me - kind of simplistic and ... colourless. A lot of telling not showing happening too.
Not bad enough to annoy me but certainly left me indifferent to the fates of everybody involved.