Finding bases and jump holes without looking at coordinates

To find the exact location of the bases/jumps, check your patrol path map. For bases, find the location where two or more lines intersect. Jump holes will usually either have multiple lines intersecting, or a single line ending abruptly. Obviously, if there is a break in a trade lane, there is most likely a base there.

Earning easy money

Hang around in the debris fields and use turret mode, etc. to shoot the floating canisters. Haul in the scrap metal, and sell it at Baltimore Shipyards, if you can. You will get about 20 credits per piece of scrap metal, and you can get easy money this way, if you do not mind waiting.

In order to get easy money, you have a good relationship with the Rogues, Hackers, and Outcasts. Go to Mactan Base in the Magellan system. Save the game. Exchange your ship for a Dromedary. Buy as much Cardamine as you can. Leave Mactan and go through the old jumpgate from Magellan to New York. Staying in the Badlands, fly from the jump gate to Buffalo Base. One there, sell all of the Cardamine. Leave, go back to Mactan, and repeat. By the time you can buy a entire cargo bay full you will be making more than 100,000 credits each time.