I wish someone would organize this because it's hard to tell what to actually read lol

It's as organized as it can be without pissing off the original uploader, lol. Basically, read the chapters in order as they are labeled.
Main Story = Chapters 1-71
Side Stories (PG13) = Chapters 72-Onwards
If you want the "Mature Version," then after reading Chapter 71, skip ahead to the second "Chapter 72" that's labelled "Mature Version"