I know slicing can ear you credits, but how do I make money? I take the stuff from archeology/bio and sell it on the GTN?
Pretty much. You gather the materials from nodes/dead enemies on planets (which means zero expenses) and then sell them on GTN -> net profit
For instance, I have a blue Ship 2 schematic. I could save it for my ship, or sell it?
Since you have no crafting skill (Archaeology, Bioanalysis and Slicing are all gathering skills) any schematics are useless to you - unless you have an alt with a crafting skill, selling is the best you can do with a schematic.