From another site:
Know your target
"It's a job," said Ellie Bernstein, who shopped on Black Friday last year but found herself cruising the parking lot of an outlet mall in Camarillo, Calif., for hours.
"You have to stay focused and be a sharp shopper," she said. "Know what you want in advance. Make a plan."
You'll want to keep your sanity and, perhaps more importantly, your dignity. Here's how:
When scrutinizing the advertisements, remember to watch for such abbreviations as "AR," or after rebate; "MIR," meaning there's a mail-in rebate; and "B&M," or brick and mortar, referring to deals available only at retail locations.
Try a dry run. Before the sale, find out where all the items you want are in the store. "At Best Buy or Circuit City, you can make one wrong turn down an aisle and it'll cost you 30 minutes in the checkout line -- and maybe being able to grab your item before it sells out," Luna said.
Some veteran deal sharks purchase desired Black Friday items a week in advance. On Black Friday, they come back and take the item to the customer-service desk and price-match. Some stores are making their Black Friday prices good for a week, so you may be able to make your returns over the weekend.
On Friday, leave the kids at home.
Get someone to drop you off so you aren't searching for a parking space for hours.
Dress in layers. Bring down comforters or blankets while waiting in line if you live in a colder climate.
Make friends in line with those around you, so if someone jumps in front of you after you've been waiting two hours, you have the weight of a group of angry shoppers behind you.
Don't take on a line jumper. To avoid direct conflict, grab a police officer, usually on the scene at big malls and stores to handle the issue.
Beware of thieves, and try not to use cash. Bring credit cards instead.
Put your purchases in a locked trunk, not your car's back seat.
Wear tennis shoes.
Divide and conquer. Have each family member take on a certain store, buying purchases for the group. This doesn't work if everyone wants the same item and the store has a one-per-customer limit.