Blue Archive reading order
The canon timeline, also known as the release schedule. I personally believe this is the right way to read Blue Archive™, but it's not the required way of reading the story. Be yourself.
If you find something odd about certain parts of the story you probably missed a small detail from an earlier event (or Hina's momotalk).
Main stories only:
Volume 1 C1-2 > V2C1 > V3C1-3 > V4C1 > V3C4 > VolEX C1 E1-13* > V2C2 > Volume F > V4C2 > V5C1 > V1C3 > Vol EX C2 E1-31 > V5C2 > V6C1-3 > Vol EX C3 > Season 2 V0
* The last 3 episodes (E14-16) happen after volume F.
Including the events (watching event promos is optional, but I would recommend watching the raid intros, the volume trailers, and the PVs):
PV1
Volume 1 C1–2 > Binah Intro > Izuna event
PV2 > Chesed Intro > Shiro & Kuro Intro
Volume 2 C1 > Cherino event > Hina’s momotalk
Volume 3 C1–2 > Hieronymus Intro > Trinity Summer 1 > Gehenna Summer > Kaitenger Intro > Shunny event > Bunny Chasers > Perorodzilla Intro
VolEX C1 E1–13 > Hot Springs event
Volume 3 C3 > NY Problem Solvers 68 > Wakamo Valentine event* > Hod Intro > Ui event
*The Wakamo event is tough, as it features the (unnerfed) EX challenges from previous events as story stages. It's fine to skip the event until later.
PV3
Volume 4 C1 > Michiru event
Volume 3 C4 > Abydos summer > Hyakkiyako summer > ASS club event > Sports event Pt 1 > Sports event Pt 2 > Goz Intro
Volume 2 C2 (I love this PV) > Christmas nurses > NY Gourmets > Aru’s momotalk
PV4
Volume F > Maid gamers
PV4.5 > Rumi event
Volume 4 C2 > summer SRT > Gregorius Intro > summer Trinity 2 > Meru event > Hovercraft Intro > Trip‑trap train
Volume 5 C1 > Part 1 > Part 2 > Myouki Kurokage Intro
VolEX C1 E14–16 > Camping hackers > Dress Hina event > Hina animation
PV5
Volume 1 C3 > Dress Aru event > Umika event > Link > Band ASS event > Say Bing (PV animation) > Sheside Outside (PV animation) > Qipao Russian event > Kisaki event (PV animation) > Trinity Idoru event
VolEX C2 E1–12 > Pajama event > Millennium EXPO > Geburah Intro
VolEX C2 E13–22 > Hina Kisaki mini story > Juri event > Sumire event > Shupogaki event
PV6
Vol EX C2 E23–31
Volume 5 C2 (1) > Hyakkaryouran summer (1) (2) (3) > Tea Party Summer > Eri event
Volume 6 C1 > Miyo event
Volume 6 C2 > Suzumi alt!!!! featuring Uzawa Reisa event > Yesod intro
Volume 6 C3 > Takane & Yakumo event > Chrismas Ninjas
Vol EX C3 > spooky sxe event
PV7
Season 2
Prologue
Volume 0 C1 E1-10
Volume EX C1 E1-11
You can also read the story by volume. Do the group stories whenever you feel like it.
(old way of formatting, just for preservation sake (the trve release order))