I can answer pretty much any question about 90210. I watched it from season one to the end. I felt like I related to the character Donna with her learning disability, and with the Walsh kids because they moved at the beginning of their sophomore year, and I did too. I graduated when the gang did, if I completed college when I was supposed to I would have graduated when they did.
I am really knowledgable with Brenda, Dylan, Kelly, Brandon, Mel, Jackie, and a little bit of Donna and David.