What should I do when I arrive in Bangkok, Thailand late at night?

The only flights I could find in my price range have me arriving at 11:45 pm. I have never been to Thailand and am nervous. What should I do to ensure safety?
Update: Ummm anything I should know about taking cabs? Will the drivers know the english name of the hotel since I don't know thai? I heard there are sketchy cabs leaving the airport? I will be looking like a little white traveller at midnight all alone after all.
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