Should I start with the flashbacks of Brian then read chapter 1 or read the story the way ...

I would say flash backkkkk cuz then you will not miss ian cuz you don't know him hehe

That's a good advice. Is skipped through the whole season 2. I don't know if I will read it.

I would say read in the order it was posted. The flashback will be easier to get through since youre reading it all at once rather than week by week for over a year that earlier readers had to slog through

I think it does really good to show you how the characters and dynamics from s1 came to be

I've read this story a while back, up until the flashbacks begin, so I kinda remember the base of the story