We bought this for our 16 month daughter and can I tell you it took no time for her to figure out how to climb up and then slide down. It entertained her for hours - seriously. She cried when we told her she had to go "night night". We set it up Easter Day inside and used it indoors for about 2 weeks until it was warmer out. Now it's outside and she still loves it. This is tha longest slide that I found. She actually slides down and quickly too - it's funny to see her face smile and giggle. Most slides are short and the kids don't get much of a "slide" but this one is by far the best. Assembly does require some strength to push the tabs into their slots. Other than that, pretty easy. My 8 year old loves it too. Of course the slide is way to small but she loves to stand up on the platform and "peek" over at other yards. EXCELLENT!