It depends what quest's you are on about. In the worlds you are assigned different quests and yes they do hint as to where you should go, other times it just relies on common sense. As for sidequests, that is up to you to look for them, that's the whole point of them being there. A sidequest isn't directly accomplished. It's down to thought and determination, and it's up to your thinking skills to know where to go :P but yes in the worlds they do give you an idea where to go. And when in space you basically have to choose between worlds, although most of the time you have to go a specific way to get to a new world. It's fun never the less. <3 the music for it tho