ESO Chronological Timeline Guide - Best Way to Play the Story

After Craglorn, you will want to start getting on the Imperial City quest line. This is a relatively small quest hub with a relatively short story line, but it's also a very entertaining story arc and circles around Molag Bal and the heirs to the Imperial City.

Not many players play this questline anymore, as you need to go into PVP territory, or they simply don't know that there's also a story quest in IC, so if you want to go there you will need to go there through the War journal. If you already have 160 Champion Points and more and started on having equipment that is 160 it might be good to queue for the one where all your Champion Points are enabled. If you should be below Champion Points 160 though, queue for the one without them. That way you will not suffer any penalties from not having any level bonuses anymore. You do get a bonus for entering the Imperial City, but IC generally is a place which can make it hard to quest. On the one hand, the Champion Point campaign is easier because monsters will be more easily slaughtered, on the other hand there will be a lot more players in there which are out to kill you. You can try to queue for the non-Champion Point campaign first and try out how well you get along there, and if that doesn't work check out the Champion Point enabled one. If any of it proves to be a challenge, try finding other players that will either protect you from enemy players, or which will kill monsters with you together.