You are. Resistors have a value of resistance measured in ohms.
Read HERE as well as below.
A good way to think about electricity is in terms of water pipes. A resistor is analogous to a tightening in the pipe (like a kink or a valve) so there is less pressure on the other side. The "water pressure" is voltage, and the about of "water" passing through a given circuit is the amperage (measured in amps).
All LEDs work only one way, and it's usually the longer lead that is the positive one. LEDs also have a max current rating. See number 35 (the one below 34 if you can't see the numbers) on the site I linked to above. Enter 14.4 volts as the supply voltage, the working voltage the LED spec sheet lists, the max amperage of the LED, and the number of LED's you're going to have in series (connected end to end). If you're going to have all the positive leads connected (this wiring them in parallel), just enter 1. It'll tell you how many ohms the resistor should be. If you give the LED's too much voltage, too much current will flow through the LED, and it will burn out. Trust me, I've done it. A 9 volt battery is too much for an LED.
If you have any more questions (AFTER READING ABOUT EVERYTHING ON THAT WEBSITE) just ask!