Always prioritize that which you believe will be interesting for you.
If you’d like to join in, I recommend reading chapter one (and its discussion thread if necessary, plus ask any questions you have) so you get to know the premise and characters.
After that, the chapters are fairly standalone. You can decide to jump to the current chapter(s) we’re reading, and read/follow along in real time (getting to the skipped chapters later). Or you can decide to go through the chapters in order, following behind the club.
If there’s enough interest, someone will run an offshoot book club to continue with the next volume after this one is finished.