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I've moved your thread into the All Things Root section since it pertains to a rooted device.
Don't worry too much... your bricking is only temporary.
Can you let me know what tutorial you were following when it bricked? Had you installed ClockworkMod Recovery and done a Nandroid backup? Also, what device do you have, 7300 (3G/WiFi), 7310 (WiFi) or SGH-I957 (LTE version)?