You should store your jewelry pieces in a cool & dry place, without any sunlight. We recommend to keep them in their original zip lock bags that they came with.
Don't sleep with it. Avoid contact with water, deodorant, perfume or body lotion.
Most of our jewelry components are Sterling Silver & 14k Gold Filled, if they tarnish they will be easy to clean and give them their original look. Some of our other components are plated brass elements that should be treated more carefully. We also have Rhodium plated components. Rhodium acts as a protective surface against tarnishing.