Firstly, it should've been a 5 star product, as it's very very fun to use and to stare at, but out of the box, the big magnetic ring was loose (it was glued with double sided tape which wasn't strong enough) so I had to apply some strong glue to put it back in place. However it now performs well, but it just delayed my first experience with it.
Secondly, having it floating in mid air is not so easy. I had about one half day of trial and error to get it right. First you have to learn how to spin it without flipping, then adjust its weight, and lastly to adjust the base magnet's legs so that it's perfectly horizontal. Anyways, once you get the hang of it, you'll probably have it spinning once in 2-3 tries. One downside about this learning process is that the magnet falls on the top of the strong magnetic base, leaving superficial marks. So if this is your first levitron, you may want to try the cheaper plastic ones first, and once you master the skill, think of going to this wooden base, which does look good on the furniture while it's seated, but really gets scratched easily when playing with it.
Tip: while I've been practicing, I covered the base with a piece of cloth, to somewhat protect it from the endlessly falling spindle.
Also, since it has a very powerful magnet, I would keep it away from credit cards and fine electronic devices. I know this might sound like a myth, but better be safe than sorry.
All in all, a very entertaining gadget, for a toy that has originally been invented in 1976.