Wiring receptacles in a series.?

I am renovating my house and had the whole thing rewired by licensed electricians. I'm trying to save a boatload of money by installing all the receptacles myself. I know that black wire is hot and that connects to a brass screw, white is neutral and goes to silver screw and bare wire is ground to the green screw. My question is if the outlet is in the middle of a series of outlets, does it matter with brass or silver screws the wires connect to? In other words, on the side of the receptacles are two silver and two brass screws, does one have to be for the power coming into the outlet and the other for power going to the next outlet in the series, or are they interchangeable?