Yes, read all of the Morrison run and love every second of it.

But if you don't have time and just want some good Jean Grey content.. I'd read E is for Extinction, Germ Free Generation, Imperial, Murder at the Mansion, Planet X, and Here Comes Tomorrow.

It is my fav version of Jean by far, but I also love OG X-factor Jean, the OG Phoenix years (Phoenix and Dark Phoenix Saga), X-men Red, all the Teen Jean stuff (Bendis, Hopeless) and even some 90's Jean (it wasn't all bad though Jean didn't have her own story but she had some good moments here and there).