The primary one you will need to train is Mining to Level I. The others have specific expertise as prerequisites, (e.g., Astrogeology requires Mining IV and Science IV) and must be skilled a little bit bit later. https://images.google.co.th/url?sa=t&url=https://Products-dd.com/category/%e0%b9%84%e0%b8%a1%e0%b9%82%e0%b8%84%e0%b8%a3%e0%b9%80%e0%b8%a7%e0%b8%9f/