It seems I should show somekind strategy here.
1.Those main missions are important, finished them as soon as possible.
2.Power unit provide energy to any kind of equipment. Look care on the icon of power unit, the small line and yellow point show which cell the power will provide to.
3.Any equipment need power, different equipment need different power. Check the describe of item. It will tell you how much power this equipment need.
4.Mining, please go into the asteroid belt, different asteroid belt have different contain of ore.
5.Split joint item. Check the item icon, you will know which part is that and where should pu it at. If you get the right combination. It will become one new item.
6.Treasure-trove. When you hear any kind of notice sound, you should stop you fleet at once. Then wait the next sound and words notice. These notice will help you to find the point of treasure-trove. And then, you need luck.