Salutations Reader!
Welcome to la Gupta Cinematic Universe!
(Based off of the original 3 Diary of a Wimpy Kid films)
Here is your handy guide to understand how to navigate this Guptastic (Guptastic means fantastic or something positive) Journey ahead of you.
First things first, unless you want to be spoiled, DO NOT read anything that starts with, "Lore of" because it explains lore from plot points and spoils them for you, and that is not Guptastic.
Another important thing to explain, the songs presented or referenced you will have to find in the separate folder titled "Guptastic Music", so when you see something like, *Cue the song , you will have to find the song in the Guptastic Music folder and read the lyrics.
Next important thing, when you open an arc to read it, it may contain background lore but most importantly, the actual plot. However, the first 3 arcs do not have a plot contained, this is because the plot of the Diary of Wimpy Kid, the original, Rodrick Rules, and Dog Days films are nearly one to one, (Nearly as in, changes made are added in musical number songs and extra plot if added) so you will have to watch those films.
(They're on Disney Plus if you have it.)
As for the things that start with "Lore of" those explain extra story details that you probably won't find in the plot of the arcs, and clear up loose ends.
Most importantly, the Arcs. An arc is a large segment of a story, and there are 12 in this series, so read them in order and if you want more details or story, read the lore documents.
So you're off on your way, I wish Guptastic Tidings for you!