UNDATED - Thanksgiving is a day away, and Black Friday shopping - the classic post-turkey shopping blitz -  is kicking off earlier than ever before.

The Better Business Bureau says many businesses will be opening their doors on Thanksgiving evening, and if you're one of the shoppers planning to take advantage of this, the BBB has a few suggestions.

  • Make sure you understand the nature of a sale. Many times, companies boast a certain percent off - but that doesn't mean it's a good deal. Be sure you comparison shop before making a final purchase.
  • Collect Black Friday coupons in advance - many are already in newspapers and online.
  • Understand the exchange and refund policies of the stores you're shopping. Even though companies aren't obligated to give you your money back, they are required to post their refund policies by the cashier.

Finally, if it's a company you're not clear on, visit the BBB online to read up on them - before waiting in line to give them your money.