Do you get marines with future trader?

Do you get marines with future trader? And if so what are they under
(i.e. ssWeapons)? And if not in future trader then how?

No you don't get marines with Future Trader, only with IFleet. As for how you get marines, read your previous thread.

But do you dock and then what?

When you dock to a station that has marines, press Shift U to trade for marines. Also, just in case you haven't done this - make sure you have copied the control bindings and pasted them into your default.ini file in the config directory.

Why didn't you read the iFleet readme?

I used to never read readme's myself. Then, when I started making mods for computer games, I wondered why nobody ever read the readme's. It took me a long time to realize I was just like them.