Is it important to read the four books in order? (are they merely set in the same 'universe', or is it on ongoing saga?)
I've just picked up the fourth book, and I've enjoyed the first few chapters but don't want to continue just yet, in case there's a bigger picture I'm missing.
Missing minor details is fine, but if there's an ongoing storyline I'll seek out the other titles before starting. For example there's little to be gained from reading Asimov's empire series (imo) in order, but it's vital his (first) foundation trilogy is.
I'm trying to avoid checking Wiki, Goodreads, etc. due to possible spoilers.