Installing Car Seat

Ny`Shalah

This is not a "product recommendation", but rather a "How to install recommendation". Most people I know with children always put their baby's car seats in the middle of the backseat. Well after church today, my husband mentioned he was gonna go home and install our daughter's carseat in one of our vehicles since I am practically due any day now. Well, my husband's fraternity brother (who is a fireman) told us to install the car seat behind the passenger's seat. Is this true? Should it be installed in the center or behind the passenger's seat? I'm thinking of just going to one of the fire stations in our city to let them install it? But the only problem with that is we have three vehicles and we need to know how to install the car seat in all three lol. I'm so confused lol. I'm a first-time mom btw so I am "lost" on a lot of things related to babies.