Start at Sol, and sell all your equipment except for the auto-pilot, nav computer, and atmospheric shielding. Purchase enough fuel units to reach Bernard's Star. Fill the remaining cargo space with luxury goods. Fly to Bernard's Star and go to a station (Miller Depot). Sell all the cargo. Purchase enough fuel units to return to Sol. Fill the remaining cargo space with robots or computers. Return to Sol and sell the cargo for a large profit by finding special buyers on the bulletin board. Repeat this route to build your profit.