I used this for the first time last night and it is so simple to set up. Plug it in (or use batteries) and press the power button-it's ready to go. The sounds are very easy to switch because they each have their own dedicated button and the included timer is nice, although I do wish the time went a bit longer. The sounds are very crisp, clear, and soothing. The volume also gets very loud and still sounds great! [This review was collected as part of a promotion.]