General Tips
1. Remember to revisit old locations frequently. Something may have changed, often in a subtle but important way.
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2. Don't forget to talk to everyone about everything. You never know who may have information you need. And Mahrute especially is—almost—always there to help.
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3. If a topic sounds like it has more to it during a conversation, or something new has happened since you last spoke, don't hesitate to bring it up again. There may be more information coming.
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4. Don't forget to tap items in your inventory to examine them. Tapping their close-up gives you a comment—it may be useful.