What do I do with all these outlet wires?
Twist the three white wires together, along with a short (about 6") length of the same gauge white wire (often called a pigtail), and cap with a wire nut. Or use one of the new push connectors.

Similarly twist the black together with a short black. 

Attach the new short wires to their respective terminals, and reattach the ground wire.

All should be well.