Using this HO scale brass train set is easy. Just connect it to an analog DC power source, and the 'A' and 'B' units will run well together. The Kadee couplers on the front of the 'A' unit and rear of the 'B' unit help in connecting it to other train cars. When handling the set, be gentle as it's a fragile item. Store it in the original boxes and foam to protect it from damage. Keep it away from moisture and extreme temperatures to prevent any damage to the paint or the motor. Clean the wheels regularly to ensure smooth operation. If you have any issues during use, contact us, and we'll help you out. Remember, we offer a 30 - day no - questions - asked money - back policy if you're not satisfied.