Our newest special report, “Kovels’ Flea Market Strategies: How to Shop, Buy and Bargain the 21st-Century Way,” includes a free supplement listing more than two dozen smart-phone apps, several helpful websites, and two child-locator aids. We update the supplement frequently. The latest apps help you find friends and dealers at the flea market and keep you in touch with family members and friends if you split up while you’re shopping. The report with the new expanded supplement is available at Kovels Online Store.