My cousin loves shopping online. Every night after dinner, she sits on the couch with her tablet and checks her favorite shopping apps. She looks at clothes, books, and home items. “It’s easy and relaxing,” she says. Sometimes she just browses; other times, she places an order. She reads product reviews and watches videos before she buys. Last week, she bought a new lamp and a yoga mat. They arrived in two days! She says online shopping saves her time, and she can shop even when stores are closed. But she also has a rule: “No shopping after 10 p.m.—or I buy silly things!” Watching her taught me that shopping online is useful, but it’s also important to be careful and plan what you need.