The written instructions for this were not very clear but a quick youtube search yielded an excellent walk through.  It is so big that I am completely comfortable allowing my 3 kiddos all on at the same time.  Love the safety enclosure though it should be noted that the pads around the edge are outside of the enclosure so everyone who is inside is physically on the trampoline.  This is not a problem, just something I didn't realize before set up.