Using this Fisher - Price Thomas & Friends Back to the Barn Track Set is super easy. First, assemble the 21 - piece track set as shown in the instructions. Then, put the batteries in the motorized Thomas engine and flip the switch to start the fun. Send Thomas up the mountain to find the escaped cows. Load the two roly - poly cows into his cargo car and guide him back to the barn. As the train moves, the wobbly cows will tip out into the pasture. You can connect this set to other non - wood Thomas & Friends track sets to make the railway bigger. Just make sure the additional track sets are available as they are sold separately. When you're done playing, turn off the engine and remove the batteries to save power. To keep the set in good condition, store it in a dry place and avoid getting it wet. Wipe the pieces clean with a dry cloth if they get dirty. Have a great time playing with your Thomas & Friends track set!