There is all sorts of info about having a garage sale. Try typing i

"How to have a garage sale" in Google. There are also books. Check ebay or Amazon.

Here are some suggestions from one who has had a sale: me!

Decide where you are going to have it. Some people in my community set up on the side of a road. Others have theirs on their front porch. That is what I did.
Ask your neighbors to join in. The more the merrier and it will attrack more lookers/ buyers!
Place signs up with arrows and date and time of your sale.
Place a free ad on Craigs list!
I marked the price on all my items which was time consuming.
My prices were not set in stone though . Most people were looking for bargains and were not shy in asking if I would accept a lower price.
I also had a FREE box very visible.
Good luck!
Bonnie
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