The story is told in a first person but from different lead characters at different times. each chapter has a theme while continuing a 'serial-based' story throughout. this should feel like HIMYM does when the story has meaning. it doesnt have to be subtle, in the fact the idea is that from each real part of the serial a 'conversation' is created. The exciting part of the format is that each character has a story. only when they do things together is there movement. this can occur in big chunks and then long breaks. it should feel like real life with your friends. the idea is that the world doesnt happen in real time. obviously we have the advantage of 'social-media' now to move the story sometimes but think about how often that really gives you all the details.
When the characters together the story is told 3rd person but it should just feel like i silent extra person was video-taping.