If i dont know the station etc off the top of my head. How do the coords they give help me figure out what sector they want and what location inside it.
It will always be a trade station, not a constructor or a carrier. Use the quadrant map to determine the system you need to travel to, the station will usually be within a few sectors of the target system.
How do i look at the coords and figure out what sector i should jump to to be in the right area?
The quadrant map.
ps Is there any way to change the font or size of it?
Yup, from the instructions:
To customize the font used in the game, create a text file in the game's folder with the filename setfont.txt and in the first line, enter the name of the font you want to use. In the second line, enter the size of the font. In the third line, enter a value of either 0 or 1 to use normal text or bold text. In the fourth line, enter the character set you want to use for different languages (default is 1). The font needs to be installed on your system and be compatible with the game's text system. If the game is unable to use the font, it will default to a standard font.