Once you arrive in Bangkok, you will need to find transportation from Suvarnabhumi, the International Airport, to your hotel. If you have booked transportation ahead of time, your only chore will be finding your driver in the mass of humanity standing outside of the luggage claim area.
If you havent already booked your ride you have a few choices. Staying at a 5-star hotel may qualify you for free transportation to your hotel but most likely you will pay one way or the other.
If you have time and know where the heck you are going you can catch a bus to your hotel. This is not recommended for the first time traveler. Catching a taxi is the way to go.
You can book a taxi ahead of time online simply by sending an email. Most Bangkok forums can recommend a good driver at a reasonable rate. The only difficulty is finding your driver upon arrival. If you have his cell phone number and an unlocked, tri-band phone with a Thai SIM card, you can just call to find his location.
If you havent booked ahead, then you will face the taxi mafia right outside of the luggage area. You will be pestered by men and women with clipboards asking where you go? They...