If you are using TurboTax Online, then you are already in EasyStep mode when you open your return. You can use the menu on the left or the Find tool (magnifying glass) to move around in the return.
If you are using TurboTax CD/Download, click the EasyStep icon in the blue icon bar to switch to EasyStep mode. Now, you can use the menu on the left or the Find tool (magnifying glass) to move around in the return. You can click on the Forms icon to go back to the forms.