The game provides for hints every time you get stuck. Also, if you find yourself in a situation where you don't know where to go / what to do, simply open the task menu and press the last task given. You character will automatically travel to the location of the task. Next to the Task menu, you can find the Hint button. This has a cooldown depending on how often do you use it. When you press it, the game will automatically provide for the next step of your task. Even if you don't understand what you need to do next, use this features to complete the task.