Place them in direct sunlight for at least six hours a day. East or west is fine; south is the jackpot. Keep them clean—a dusty panel loses 20% of its power, which is like buying a pizza and only getting the crust.
Use a smart plug or energy monitor to track how much power you’re actually feeding into your home. Some grids don’t allow back-feeding, so check local rules. But honestly, most people just plug it in and forget it—and that’s kind of the beauty.