So i started the fanboy (Ken) Quest but now it says to travel to the suburbs and talk with him, i may have skipped the scene where it says it but i dont what is the suburbs and how to go there

Ken's House is located in the left side of the map. Make sure to talk to Anna first about Ken though, otherwise you can't progress the Questline or you might get softlocked because of it. I forgot what the area is called but it's like one of the biggest chunks of the entire map. Click that and you'll see Ken's House has been unlocked