1. Gather Supplies in Advance
Prior to the yard sale, I bought sticker labels and hanging labels in bulk on Amazon, and then rented two small tables and two clothing racks for a total of $58 (which ended up being very worth it). More must-haves: pens, a container (fanny pack-type thing or large wallet) to hold your money, at least $100 in ones and fives for change, and picnic blankets to lay out the ground so you can set things on the grass without getting them dirty.
Photo Credit: Ramshackle Glam