When you start the game, you will be asked to choose your pet first. Use the green button to change your pet and OK to select the pet that appears on the screen. Use the writing bar that appears at the bottom to give your pet the name you want on the screen that appears. Your pet's need levels are indicated in the chart in the upper left corner. There's no need to offer your pet something it doesn't need. Click on the product that needs it to meet their needs. Use the sleep button to sleep. You cannot sleep without the night. As you meet your pet's needs, your pet grows and ages.