Arduino Uno - No Port Showing Up

Mac OSX - Yosemite 10.10.2 Arduino Uno

Hello! I just purchased the Arduino Starter Kit and after installing Arduino 1.6.3, I booted up board by going to Tools > Board and selecting Arduino Uno. But when I go to Tools > Port, no serial appears. The only options I get are:

/dev/cu.Bluetooth-Incoming-Port /dev/cu.Bluetooth-Modem /dev/cu.usbmodem1451 (Arduino Uno - Uncertified)

None of the options are working and the last option regarding uncertified worries me especially since I bought the official Arduino Starter Kit and couldn’t see why that option would load.

Let me know if you have any suggestions! Thanks!