so i just started yesterday and quick question, does any ship have more than just three weapon slots or is that standard for all ships?
Yes. When you rank up (lt. commander, commander, etc.) and depending on whether you go with an escort, cruiser, or science, you'll get more weapon slots. I believe you get 3 forward weapon slots with the first escort ship (tier 2). I'm pure science, but bought a tier 2 escort ship to just play with in fleet action during open beta, and I'm almost positive it had 3 fore, 1 aft weapon slots.