Have you checked out your quests/missions/tasks tab?...is there anything outstanding there?
Have you returned to your camp?...is there any character there that needs speaking to?
Have you returned to the last game scene?...is there any character that needs speaking to?
Have you tried logging out & logging in?
Have you tried clearing your cache, cookies, history, etc?
Have you checked out the Wiki page, maps & videos?
Have you checked out the numerous peoples postings in this forum that contain maps, videos, walkthroughs, guides & dedicated websites?
Screenshots are very useful to assist other players to help you.