I learned my yard sale skills from my parents. From Dad, always get a lot of change, both bills and coins. Take two ladders and hang a PVC pipe or something like that to hang up clothes, Keep things organized, never leave your money in a box, keep it on your person unless there is someone else at the table. Keep all jewelry on table, unless of course it is those cheap colored leis that are in the free box. Prepare to open up early and even if you say no early birds in your ads, not all people have come to your yard sale from the ads some come from your well put signs. And always take you signs down as soon as your yard sale is over.