Using this HO brass OMI Union Pacific GE Experimental UM - 20 A/B set is easy. Just connect it to an analog DC power source. When you turn on the power, the set will start running on your model railroad track. Since it has fuel tank - style drives, it gives a unique look and movement. Remember, the gearboxes are known to fail, so handle the set gently and avoid rough movements. For maintenance, keep it in a dry place to prevent the minimal tarnish from getting worse. Clean the wheels regularly to reduce wear and keep the running smooth. If you want to display it, use the replacement box and foam insert to protect it. And don't forget, if you're not satisfied, you can return it within 30 days, though you'll be responsible for return shipping unless the item arrives damaged.