I just put it in direct sunlight outside and watered it with distilled water by setting it on some gravel in a tray and pouring the water into the tray. It catches its own food.
Venus fly traps need full outdoor sunlight, and they can’t tolerate any minerals. You have to pot them in sphagnum moss or sphagnum peat and water them with distilled water, RO water, or rainwater. The pot needs to be at least 6 inches deep and not made of clay, with drainage holes. Soft drink cups work well. Set the cup in a dish and keep about an inch of water in the bottom. You want the substrate to always be slightly damp, like a wrung-out sponge, but not sopping wet. If you give them that, they’re super easy.